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

<passage>:
I'm talking sense. Listen! I'm in trouble because I went to Earth to look for a wife. You're standing here right now because you're on your Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Actually, there wouldn't be too much difference if women took over the Earth altogether. But not for some men and most boys! I've always said that even if Sis is seven years older than me—and a know how to operate sub-surface machinery, you've lived underwater, and jam-packed with three hundred females just aching to get themselves husbands in the one place they're still to be had—the planet girl besides—she don't always know what's best. Put me on a spaceship Venus—and you know I'll be in trouble. on you for a wife. You're healthy and strong, got good heredity, you front of the doors, showing that the girls were still inside their hammocks. That meant only the ship's crew was up and about. Ship's crews are men women are too busy with important things like government to run ships. I felt free all over—and happy. Now was my chance to Eleanor Roosevelt ! It was hard to believe I was traveling in space at last. Ahead and underfoot all the time just like I was home on the bottom of the Gulf Middle Ages. "In the event of disaster affecting the oxygen content of companionway," they had the words etched into the glass, "break glass back in Undersea! existed in the Universe. But I thought of what Sis would say and I turned around obediently. Then I saw the big red sign again. "Passengers not permitted—" Well! Didn't I know from my civics class that only women could be Earth Citizens these days? Sure, ever since the Male Desuffrage Act. And didn't I know that you had to be a citizen of a planet in order to get an interplanetary passport? Sis had explained it all to me in the careful, patient way she always talks politics and things like that to men. "Technically, Ferdinand, I'm the only passenger in our family. You can't be one, because, not being a citizen, you can't acquire an Earth Passport. However, you'll be going to Venus on the strength of this clause—'Miss Evelyn Sparling and all dependent male members of family, this number not to exceed the registered quota of sub-regulations pertaining'—and so on. I want you to understand these matters, so that like and appreciate that counts when it comes to people getting married. If it were, Sis and three hundred other pretty girls like her wouldn't be on their way to Venus to hook husbands. Still, if I wasn't a passenger, the sign didn't have anything to do What? " "A 'nuran is a female looking to nest. Anura is a herd of same. Come from Flatfolk ways." from Undersea." , I said, not dryleg. And what's Undersea?" "Well, in Undersea we called foreigners and newcomers drylegs. Just like on Venus, I guess, you call them dryhorns." And then I told him how Undersea had been built on the bottom of the Gulf of Mexico, when the mineral resources of the land began to give out and engineers figured that a lot could still be reached from the sea bottoms. He nodded. He'd heard about the sea-bottom mining cities that were bubbling under protective domes in every one of the Earth's oceans just about the same time settlements were springing up on the planets. disgusted when I told how Mom, as Undersea representative on the World Council, had been one of the framers of the Male Desuffrage Act after the Third Atomic War had resulted in the Maternal Revolution. "Well, after the funeral, there was a little money, so Sis decided we might as well use it to migrate. There was no future for her on Earth, she figured. You know, the three-out-of-four." "How's that?" "The three-out-of-four. No more than three women out of every four on Earth can expect to find husbands. Not enough men to go around. Way back in the Twentieth Century, it began to be felt, Sis says, what with the wars and all. Then the wars went on and a lot more men began to die or get no good from the radioactivity. Then the best men went to the planets, Sis says, until by now even if a woman can scrounge a personal husband, he's not much to boast about." The stranger nodded violently. "Not on Earth, he isn't. Those busybody anura make sure of that. What a place! Suffering gridniks, I had a bellyful!" He told me about it. Women were scarce on Venus, and he hadn't been able to find any who were willing to come out to his lonely little islands he had decided to go to Earth where there was supposed to be a surplus. Naturally, having been born and brought up on a very primitive planet, he didn't know "it's a woman's world," like the older boys in school used to say. The moment he landed on Earth he was in trouble. He didn't know he had and imagine came from, a man spoke his piece when he'd a mind to, and his woman walked by his side." fancy little prison sentences. Forcible Citizenship Indoctrination, they call it? Shook the dead-dry dust of the misbegotten, God forsaken mother world from my feet forever. The women on it deserve their men. My pockets were folded from the fines, and the paddlefeet were looking the light globe. "No more'n twelve—not counting five government paddlefeet, of course. I'm a peaceable planter. Way I figure it, and I had to wash it myself. But I learned so many wonderful things All I have is Sis. And she —" swivel chair he'd vacated and tried to answer his questions. But there the average number of children. No, we'd never done any farming to speak of, back in Undersea, but—yes, I'd guess Evelyn knew about as much as any girl there when it came to diving equipment and pressure How would I know that stuff would lead to trouble for me? Sis had insisted I come along to the geography lecture. Most of the other girls who were going to Venus for husbands talked to each other during the lecture, but not my island and the peninsula didn't meet for most of the year?" Earth against the possibility that they might be read by susceptible young male minds like yours. She would not have allowed—this Terran Agent—" "They're trappers and farmers, pioneers and explorers, who're building "Does it, now?" she said, looking at me as if I were beginning to grow a second pair of ears. "Tell me more." "You can't have meek, law-abiding, women-ruled men when you start civilization on a new planet. You've got to have men who aren't afraid to make their own law if necessary—with their own guns. That's where A trap seemed to be hinging noisily into place. "One of the passengers wanted to see how you looked in a bathing suit." "The passengers on this ship are all female. I can't imagine any of them that curious about my appearance. Ferdinand, it's a man who has the control section with Sis. She didn't give ground, though I'll say Venus." "We haven't done so badly on Earth, after the mess you men made of politics. It needed a revolution of the mothers before—" "Needed nothing. Everyone wanted peace. Earth is a weary old world." "It's a world of strong moral fiber compared to yours, Mr. Alberta Lee Eleanor Roosevelt sent back to Earth to serve out those fancy little sentences." "Well, you're guilty of them, aren't you?" He waved his hands at her impatiently. "I'm not talking law, female

<question>:
Why did people live under the water?

<options>:
A The land was no longer safe
B They could get married and have children there
C It was easier to mine there
D The women ruled the Earth

<answer>:

C