Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
A FALL OF GLASS It was disconcerting, and at the same time enchanting, to watch one's a cloudless blue sky. residence frisking about on its foundation. It was such a strange sight that for the moment he didn't give a thought to what might be causing his favorite easy chair sailed out of the living room on a blast of deeply about it that it never occurred to him that entirely too many people were bumping into him. He was thinking about Optimum Dome Conditions (a crisp 59 degrees, a mildly dessicated 47%) when a bogus and take—the sole difference being that Humphrey Fownes had no idea he was playing. There was an occasional tinkle of falling glass. It fell on the streets and houses, making small geysers of shiny mist, hitting with a gentle musical sound, like the ephemeral droppings of a celesta. It was precipitation peculiar to a dome: feather-light fragments showering harmlessly on the city from time to time. Dome weevils, their metal arms reaching out with molten glass, roamed the huge casserole, ceaselessly patching and repairing. Humphrey Fownes strode through the puffs of falling glass still "What?!" Optimum Dome Conditions!" the voice wailed. "The temperature is not shouted. "Roses! My odd, objective kind of admiration, clinical in nature. It was similar particularly virulent strain of pneumococcus under his microscope. Lanfierre's job was to ferret out aberration. It couldn't be tolerated within the confines of a dome. Conformity had become more than a social force it was a physical necessity. And, after years of working at it, genuine quirks were rare and, as time went on, due partly to his own small efforts, rarer. the windshield. "Like from ... When the roof blew off they weren't really surprised. With a certain amount of equanimity they watched it lift off almost gracefully, standing on end for a moment before toppling to the ground. It was strangely slow motion, as was the black twirling cloud that now rose out of the master bedroom, spewing shorts and socks and cases every in an incessant chatter of cliches, and their actions were unbelievably trite. held it up and carefully compared the spinning cloud in his bedroom with the illustration. The cloud rose and spun, assuming the identical shape of the illustration. whole place is going to slide off its foundation and go sailing down and that ... and that Oz is a wonderful and mysterious land windows all close at the same time. You'll be watching and all of a sudden every Huge chunks of glass began to fall around them. they all had something important to say but had to close the windows first so no one could hear. Why else close the windows in a domed city? And then as soon as the place is buttoned up they all explode into conversation—and that's why the house shakes." mountainous puffs of glass as he went. "Mrs. Deshazaway!" he shouted. precipitation. They whirred back and forth at frightful speed, then, A falling piece of glass dissolved into a puff of gossamer against the emptied of molten glass, rushed to the Trough which they quickly "No, I don't need a vacation." Optimum temperature collapsed. "Mrs. Deshazaway! Agnes At that moment, all at once, every last window in the house slammed , will you emptied and then rushed about empty-handed. "Yoo-hoo!" he yelled, running. The artificial sun vanished behind the mushrooming twister. There was quite a large fall of glass. It rocked from side to side, it pitched forward and back, it yawed and dipped and twisted, straining at the mooring of its foundation. The neurotic when they could be enjoying a happy, normal existence. There was something implacable about his sighs. high-pressure air caused some buffeting against the thin walls of the draw-pull. Every window slammed shut. "Tight as a kite," he thought, satisfied. He continued on toward the wheels surrounding the Master Mechanism, which was a miniature see-saw watched as they spun and flashed in the darkness, and then set them for Outside, the domed city vanished. It was replaced by an illusion. Or, as Fownes hoped it might appear, the illusion of the domed city vanished and was replaced by a more satisfactory, and, for his specific purpose, more functional, illusion. huge area of sky, and it sang. The sun and moon both looked down upon a Moonlight, he thought, and roses. Satisfactory. Oh, You Beautiful Doll an enchanted moon, flowers, scent. romantic moon. Now, does it do anything to your pulse? Do you feel icy How really odd the ancients were. Seduction seemed to be an incredibly long and drawn-out process, accompanied by a considerable amount of falsification. Communication seemed virtually impossible. "No" thinking roguishly: Thou shalt not inundate. The risks he was taking! A shower fell gently on the garden and a male chorus began to chant Singing in the Rain . Undiminished, the yellow moon and the red sun The neon roses bent and tinkled against each other as the wind rose and No. Contrived. How about a simple, one gigantic skeleton that began to rattle its bones and dance as high-pressure air from the dome blower rushed in, slowly opening the Studebaker valve wider and wider.... The neon roses thrashed about, extinguishing each other. The red sun shot off a mass of sparks and then quickly sank out of sight. The moon fell on the garden and rolled ponderously along, crooning When the Blue of the Night Meets the Gold of the Day red. Her clothes rustled and her high heels clicked and her jewelry idea what people are saying? They're all saying I'm a cannibal! I rob my husbands of their life force and when they're empty I carry their bodies outside on my way to the justice of the peace." "That's impossible! How?" the dome." the sleeping equinox yawns and rises because on a certain day it's eighty. She spent her days reading ancient library cards and, like the books around her, had been rendered by time's own censor into near unintelligibility. "Here's one," she said to him as he entered. " illustration. "What's that?" he said. What do you make of was unquestionably a meteorological phenomenon. It spun ominously, like a malevolent top, and coursed the countryside destructively, carrying looking oddly like giants fled from their fairy tales, protesting. "Where did the old society fail?" the leader was demanding of them. He glanced around at the group almost complacently, and waited as Humphrey Fownes squeezed into an empty chair. "We live in a dome," the leader said, "for lack of something. An invention! What is the one thing that the great technological societies before ours could not invent, notwithstanding their various giant brains, electronic and otherwise?" with this problem in revolutionary dialectics. " A sound foreign policy ," the leader said, aware that no one else had obtained the insight. "If a sound foreign policy can't be created the only alternative is not to have any foreign policy at all. Thus the movement into domes began— by common consent of the governments . This is known as self-containment." Dialectically out in left field, Humphrey Fownes waited for a lull in the ensuing discussion and then politely inquired how it might be window and turning his back quite pointedly on them.

<question>:
What does the falling glass symbolize?

<options>:
A The importance of bucking authority and tradition in order to identify solutions for problems that plague communities all over the globe
B The delicate balance that countries -- large and small, developed and developing -- must strike if they are to preserve Earth's natural resources
C The deterioration of boundaries between members of different races, genders, social classes, and religious factions
D The cracking of an illusion of safety and optimal conditions in a chaotic world inhabited by humans bent on self-destruction

<answer>:

D