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

<passage>:
"Why does your mind shrink backward?" and I have several good reasons for not "I've changed my mind. You will be welcomed." "Listen to that, will you?" Stinson said angrily. "Just listen! You set yourself up as a God for the webfoots. You get them eating out of your hand. Then what do you do? You throw a fit. Yes, a fit! Like an adolescent. Worse." This became disturbing, since there was scarcely enough wind to move life. There is a oneness, a bond that ties each living thing to every other living thing. It is a lesson my people never knew. Select any portion of this planet that suits you. Take the web-footed woman for your wife. Have children. I promise never to harm you in any way." "The webfoots?" "You and they shall share the planet." The Sand God disappeared. Sybtl said wanted to cover himself with the long leaves he found, but they were The cavern was crowded. These creatures were not only humanoid, but definitely human, although more slight of build than earth people. The only difference he could see at first sight was that they had webbed feet. All were dressed from the waist down only, in a shimmering skirt that sparkled as they moved. They walked with the grace of ballet dancers, moving about the plaza, conversing in a musical language with no meaning for Stinson. The men were dark-skinned, the women somewhat lighter, with long flowing hair, wide lips and a beauty that was He was in chains! They were small chains, light weight, of a metal that Suddenly a great voice sounded in the cavern, a voice with no direction. It came from the ceiling, the floor, the walls, the steaming pool. It was in the language of the web-footed people it was in his his feet has decreed this." Those in the cavern looked at the woman with fear and respect. She kissed Stinson's feet. Two of the men came and gave her a brilliant new skirt. She smiled at him, and he thought he had never seen a more beautiful face. The great, bodiless voice sounded again, but those in the cavern went exist, almost as soon as those of the sixth planet peoples. I am most interested in you. You will bring your people, and live here." "I haven't decided. There are these web-footed people, who were hostile until they thought I was a God. They have destructive weapons. Also, I webfoots use is a toy by comparison. Our scientists found the ultimate nature of physical law. They learned to separate the mind from the body. Then my people set a date. Our entire race was determined to free God," she said, "to speak to my people again. Their fear of him does not last. When He is gone they will probably kill us." "As for the webfoots," the wind devil, or Sand God, said, "I will destroy them. You and your people will have the entire planet." "Destroy them?" Stinson asked, incredulously, "all these people? They then. The web-footed people milled about restlessly. The woman's eyes pleaded. When he looked back, the Sand God was gone. Instantly a new note rose in the cavern. The murmur of unmistakable mob fury ran over the webfoots. Several of the men approached the woman with hatred in their voices. He could not understand the words now. Together they edged toward the cavern entrance, ran quickly up the was reflected from a million tiny mirrors on the rocks, the trees and grass. A silver thaw during the night had covered the whole area with a coating of ice. Stinson shivered. The woman handed him a skirt she had thoughtfully brought along from the cavern. He took it, and they ran down the slippery path leading away from the entrance. From the hiding place behind a large rock they watched, as several web-footed men emerged into the sunlight. They blinked, covered their eyes, and jabbered musically among themselves. One slipped and fell on the ice. They re-entered the cave. Stinson donned the shimmering skirt, smiling as he did so. The others should see him now. Benjamin and Straus and Jamieson. They would laugh. And Ben's wife, Lisa, she would give her little-girl laugh, and probably help him fasten the skirt. It had a string, like a tobacco pouch, which was tied around the waist. It helped keep him warm. He turned to the woman. "I don't know what I'll do with you, but now She smiled, then pointed to the cavern. "When the ice is gone, they "We'd better make tracks." "No," she said, "we must run, and make no tracks." "But...." webfoots were no match for him. He could travel instantly to any spot he chose. But with Sybtl it was another matter he was no better than hampered by a woman, slinking through a frozen wilderness like an depended on him. Anyway, he decided, pursuit was impossible. They left no tracks on the ice. They were safe, unless the webfoots possessed talents unknown to him. So they followed the path leading down from the rocks, along the creek Stinson's bare feet were numb from walking on ice. Christ, he thought, the webfoots. He stopped, tempted to use his cylinder and move to a warmer, less dangerous spot. The woman pulled on his arm. "We must hurry!" the Sand God. It was blood red now. It pulsed violently. The great voice burst forth. "Leave the woman!" it demanded angrily. "The webfoots are nearing your position." "I cannot leave her. She is helpless against them." drove them backward. "Earthman," the great voice said, "go back to your Earth. Take your inconsistencies with you. Do not come here again to infect my planet with your primitive ideas. The webfoots are not as intelligent as you, but they are sane. If you bring your people here, I shall destroy you all." the thunder of its passing shook the ground and echoed among the lonely burn, that and the skirts. Then, when he had burned the ship, the Sand "Don't worry. The Sand God travels without a ship, why shouldn't I?" no time, now, to warm cold feet or dwell on the vagaries of Sand Gods. mound of rock. Here they came to the creek again, which flowed into a small canyon. They climbed the canyon wall. Far away, small figures moved. The webfoots were on their trail. She drew him into a small cave. It was heated, like the great cavern, but held no walled pool nor mysterious lighting. But it was warm, and "They will not find us...." makes it rain in a dry summer, or sometimes warms the whole world for days at a time in winter, so the snow melts and the grass begins least he does this when he plays. Who knows what he will do when he's "Poor little God-with-fingers-on-his-feet," she said. "You do not not blue. He is running around the world on feet like the rockets of creek. They dared not move from the cave, although death seemed certain The skirt flew up around his face. He could not get up again. He returned to the cave. Soon after, while they sat huddled together, watching the chaos of Thunder rumbled distantly. Clouds disappeared. Stinson and Sybtl emerged from the cave. There was no longer a question of attack from the webfoots, the storm had taken care of that. The fierce sun began its work of drying rocks of creeping, crawling nether things. a time for good-bys. He thought, perhaps I can stay here alone with her. The webfoots might find us, or the Sand God might destroy us in one of his fits, but it might be worth it. "Don't go," she said. "Not yet."

<question>:
Why do the webfoots only wear skirts?

<options>:
A Skirts are traditionally worn by prisoners. The webfoots on this planet are all criminals or descendants of criminals.
B The people from the sixth planet only sent skirts, when it was communicated that the Sand God had burned everything else.
C The Sand God burned everything, except for the skirts.
D Skirts are the traditional dress for the webfoots culture.

<answer>:

C