Which of the following quotations provides evidence that the man is becoming more frightened? a. "the man was shocked. it was as though he had just heard his own sentence of death. for a moment he sat and stared at the spot where the fire had been. then he grew very calm. " b. "fifty degrees below zero meant eighty-odd degrees of frost. such fact impressed him as being cold and uncomfortable, and that was all. " c. "he was used to the lack of sun. it had been days since he had seen the sun, and he knew that a few more days must pass before that cheerful orb, due south, would just peep above the sky-line and dip immediately from view. " d. "and the man, as he beat and threshed with his arms and hands, felt a great surge of envy as he regarded the creature that was warm and secure in its natural covering. "