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

<passage>:
at first. Too smoothly, it seemed to me, and the others seemed to think so, too. McIvers’ restlessness was beginning to grate on our nerves. driving wisecracks, witticisms, unfunny jokes that wore thin now and then, never far, but a little further each time. Jack Stone reacted quite the opposite he grew quieter with returned his smile with a nod. Then he settled back and waited impatiently for the intruder who demanded his time without justifying it. each stop, more reserved and apprehensive. I didn’t like it, but I figured that it would pass off after a while. I was apprehensive no key to his age—he might have been thirty or a thousand—but he looked weary and immensely ugly. His cheeks and enough myself forehead were twisted and brown, with scars that were still But it took one of those side trips of McIvers’ to deliver the without expression. Then he said slowly, “No, I’m afraid you’re not going to make the Crossing.” “I know. I was hoping you’d quit looking and chuck the whole idea.” “But you’ve got to. You’re the only man on Earth who’s thick and tenacious, splattering around in steaming gobs as the wheels spun. I knew what had happened the moment the wheels gave and, a few minutes later, they chained me to the McIvers’ scheme for an advanced scout to know.” “It’s simple. We failed because it can’t be done. We couldn’t do it and neither can you. No human beings will ever cross the Brightside alive, not if they try for centuries.” like it. One error in judgment could sink us all, but I wasn’t thinking worried. I kept thinking, better McIvers should go than me. much about the others. I was worried about It was the planet that whipped us, that and the broad flat plateau, dodging a network of gaping surface cracks—winding back and forth in an effort to keep the machines on Sun . They’ll both quarters—but we just didn’t know what we were fighting. whip you, too, if you try it.” “Never,” said Baron. a deep crack. I let out a shout to halt the others I was heartbroken when they just disappeared. I know now that they were a pair of idiots, starting off without proper equipment, with practically no knowledge of surface I can remember (Claney said). I guess I was about ten when Wyatt and Carpenter made the last attempt—that was in 2082, for some years and hung onto the title after he gave up his commission. since the Matto Grasso. Then he made the attempt on Vulcan Crater that paved the way for Balmer a few years later. I’d always liked the Major—he was big and quiet and cool, the sort of guy who always had things figured a little further ahead than anyone else and always knew what to do in a tight place. Too many men in this game are all nerve and luck, with no judgment. The Major had both. He also had the kind of personality that could take a crew of wild men and make them work like a well-oiled machine across a thousand heat, just to have some joker come along, use your data and drum you out of the glory by crossing at perihelion forty-four days later? No, thanks. I want the Brightside without any nonsense about it.” He leaned across me eagerly. “I want to make nobody’s got Mercury. I want Mercury—but I’ll need help getting it.” turns on its axis in the same time that it wheels around the Sun, which means that the Brightside is always facing in. That makes the Brightside of Mercury at perihelion the hottest place in the Solar System, with one single exception: the It would be a hellish trek. Only a few men had ever learned just how Brightside and Darkside offers something closer to survival temperatures. for about seventy out of the eighty-eight days it takes the planet to wheel around. The Major was counting on Sanderson knowing something was like. Stone was a youngster—hardly twenty-five, I’d say—but he’d been with the Major at Vulcan and had begged to join this trek. I had a funny feeling that Jack really didn’t care for exploring too much, but he thought Mikuta was God, followed him around like a puppy. It didn’t matter to me as long as he knew what he was getting in for. You don’t go asking people in this game why they do it—they’re liable to get awfully uneasy and none of them can ever give you an answer that makes sense. Anyway, Stone had and testing himself, with a big assist from Sanderson. We had four Bugs, three of them the light pillow-tire models, with special lead-cooled cut-in engines when the heat set in, said, “Have you heard anything from McIvers?” I’d heard plenty of stories about Ted McIvers and I wasn’t too happy to hear that he was joining us. “Kind of a daredevil, isn’t he?” “Maybe. He’s lucky and skillful. Where do you draw the line? We’ll need plenty of both.” McIvers. We understood each other when I talked up the Two days later, McIvers hadn’t arrived. The Major didn’t Stone nodded. “Sanderson told me there was probably constant surface activity.” The Major shrugged. “Well, it’s treacherous, there’s no Finally, on the third day, McIvers blew in on a freight He was a tall, rangy man with long, wavy hair prematurely gray, and the sort of eyes that looked like a climber’s—half-closed, sleepy, almost indolent, but capable of abrupt alertness. And he never stood still he was always moving, always doing something with his hands, or talking, or pacing about. Evidently the Major decided not to press the issue of his running the final tests on the pressure suits. That evening, Stone and McIvers were thick as thieves, and everything was set for an early departure after we got some rest. Peter Claney raised his eyebrows. “McIvers?” like this, and some of the best wouldn’t seem to be the most reliable at first glance. Anyway, personality problems weren’t our big problem right then. seventy miles a day, no matter how hot it became, no matter what terrain we had to cross. Detours would be dangerous and time-consuming. Delays could cost us our lives. We all knew that. McIvers and Stone exchanged glances. McIvers said: “Jack McIvers made an impatient gesture with his hands. “It “Nonsense,” Baron declared. “We will.” “Sure, sure.” McIvers pulled at his lower lip. “Who’s going “It sounds like I am,” I cut in. “We want to keep the lead Bug light as possible.” McIvers shook his head. “No, I mean the can blame the equipment or the men—there were flaws in “That’s what we have the charts for,” the Major said sharply. I can stay on good solid ground, of course, but scan the area closely and radio back to Peter where to avoid the flaws. Then—” “No dice,” the Major broke in. “But why not? We could save ourselves days!” “I don’t care what we could save. We stay together. When It wasn’t healthy thinking and I knew it, but I couldn’t get the McIvers stared at him, his cheeks an angry red. Finally he thought out of my mind. gave a sullen nod. “Okay. If you say so.” Major and McIvers crawling out behind me, their pillow tires Stone dragged the sledges. Even at only 30 per cent Earth gravity they were a strain on the big tractor, until the ski-blades bit into the fluffy volcanic The Major measured water out with an iron hand, because we’d have drunk ourselves into nephritis in a week otherwise. We were constantly, unceasingly thirsty. Ask the physiologists the hardest way possible: overland, through anything the land could throw up to us, at the most difficult time possible. itself. Brightside was worth trying for. We would get it or it would get us. That was the bargain.

<question>:
Which word least describes McIvers?

<options>:
A fidgety
B experienced
C lucky
D stubborn

<answer>:

D