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

<passage>:
huddles back against the blankets hanging around the Nest. Pa says it When I'd recovered the pail and could look again at the opposite the clocks are alarm and we can use them to remind us. In the early of him that way: a tall man sitting cross-legged, frowning anxiously at the fire, his lined face golden in its light, and every so often pail from me and bawl me out for loitering—he'd spotted my frozen helmet right off. That roused Ma and she joined in picking on me. She's always trying to get the load off her feelings, Pa explains. He shut besides he has to leave the chimney open for smoke. the entry-slit in the blankets and wringing her hands together—the hand where she'd lost three fingers from frostbite inside the good one, as usual. I could tell that Pa was annoyed at me scaring her and wanted to explain it all away quickly, yet could see I wasn't fooling. "And you watched this light for some time, son?" he asked when I I hadn't said anything about first thinking it was a young lady's face. Somehow that part embarrassed me. little while, long enough for our trips for water and coal and food and so on. Ma started moaning again, "I've always known there was something outside there, waiting to get us. I've felt it for years—something that's part of the cold and hates all warmth and wants to destroy the Nest. It's been watching us all this time, and now it's coming after us. It'll get you and then come for me. Don't go, Harry!" afraid to go by myself, but when Pa's along I always want to hold on to him. Habit, I guess, and then there's no denying that this time I was a bit scared. knew that if there was something groping around out there, it couldn't be anything human or friendly. Besides that, there's a feeling that comes with it always being night, night. Pa says there used to be some of that feeling even in the old days, but then every morning the Sun would come and chase it away. I have to take his word for that, not ever remembering the Sun as being says the stars used to twinkle once, but that was because there was of when I told him about the light, but I had thought of it myself first and known it wasn't so. to point out the windows to him. But there wasn't any light moving around inside them now, or anywhere else. To my surprise, Pa didn't bawl me out and tell me I'd been seeing things. He looked all around he whipped around without warning, as if to take some peeping thing off guard. I could feel it, too. The old peace was gone. There was something lurking out there, watching, waiting, getting ready. Inside, he said to me, touching helmets, "If you see something like that again, son, don't tell the others. Your Ma's sort of nervous these days and we owe her all the feeling of safety we can give her. Once—it was when your sister was born—I was ready to give up and die, but your Mother kept me trying. Another time she kept the fire going a whole His talking to me that way made me feel grown-up and good. But it didn't wipe away the thing outside from the back of my mind—or the told them it was nothing and kidded me for having such an imagination, but his words fell flat. He didn't convince Ma and Sis any more than he did me. It looked for a minute like we were all fumbling the Wanting it even, or at least wishing it were over so as to end their nervousness. As if all folks didn't have to hang together and pool every bit of warmth just to keep alive. And how can they have hoped to end danger, any more than we can hope to end the cold? pretty wild. He may be right. The dark star, as Pa went on telling it, rushed in pretty fast and there wasn't much time to get ready. At the beginning they tried were scared or brave or crazy or stunned, or all four, but he's sort of leery of the subject, and he was again tonight. He says he was mostly too busy to notice. I guess he's telling pretty much the truth when he says he didn't have any time to keep an eye on how other folks behaved, either then or peeking out, close together. And in another a beautiful young lady is sitting with a pile of wraps huddled around her, looking hopefully toward the door, as if waiting for someone who never came back with Pa showed them to me once in quick winks of his flashlight, when he still had a fair supply of batteries and could afford to waste a little light. They scared me pretty bad and made my heart pound, especially the young lady. sudden I got an idea that scared me worse than anything yet. You see, I'd just remembered the face I'd thought I'd seen in the window. I'd forgotten about that on account of trying to hide it from the others. ever-growing cold, with the temperature creeping down the last few degrees to the last zero, had mysteriously wakened the frozen folk to eyes, creeping, crawling, snuffing their way, following the heat to the Nest. I tell you, that thought gave me a very bad turn and I wanted very badly to tell the others my fears, but I remembered what Pa had said and clenched my teeth and didn't speak. skin tightened all over me. Pa was telling about the early years in the Nest and had come to the glow. It makes everything else worth while. And that's as true for the last man as the first." And still the steps kept shuffling closer. It seemed to me that the Meanwhile, the young lady kept looking around at us as if we were saints, and telling us we'd done something amazing, and suddenly she broke down and cried. They'd been scouting around for survivors, but they never expected to instrument that noticed the faintest heat waves and it had told them there was something warm down here, so they'd landed to investigate. to Ma all the time and hid her face when anybody looked at her. I felt pretty uncomfortable and disturbed myself, even about the young lady. Glimpsing her outside there, I'd had all sorts of mushy thoughts, but now I was just embarrassed and scared of her, even though she tried to be nice as anything to me. I sort of wished they'd all quit crowding the Nest and let us be alone and get our feelings straightened out. as if that were taken for granted, I could see that something of the same feeling struck Pa and Ma, too. Pa got very silent all of a sudden and Ma kept telling the young lady, "But I wouldn't know how to act there and I haven't any clothes." The strangers were puzzled like anything at first, but then they got the idea. As Pa kept saying, "It just doesn't seem right to let this fire go out." hankering to see them for myself. You ask me, Pa wants to see them, too. He's been getting pretty thoughtful, watching Ma and Sis perk up. "It's different, now that we know others are alive," he explains to me. "Your mother doesn't feel so hopeless any more. Neither do I, for that matter, not having to carry the whole responsibility for keeping the human race going, so to speak. It scares a person." I looked around at the blanket walls and the fire and the pails of air boiling away and Ma and Sis sleeping in the warmth and the flickering light. "It's not going to be easy to leave the Nest," I said, wanting to cry, kind of. "It's so small and there's just the four of us. I get scared at the idea of big places and a lot of strangers." with just the Nest. Now it'll be good to have a real huge world again, the way it was in the beginning." I guess he's right. You think the beautiful young lady will wait for me till I grow up? I'll be twenty in only ten years.

<question>:
Why did his father not want the boy to tell his mom if he saw more lights outside?

<options>:
A He didn't want to hear her throw fits about it.
B He wanted to protect her like she had protected him
C He knew there was no one out there
D He didn't want her to be hopeful someone was coming

<answer>:

B