need help..!!!

All of the following are examples of dark humor from "The Happy Man" except:
a. "Today he felt happy, full of happiness, as a matter of fact. There was no arguing it. The symptoms were quite clear, and their vigor and obviousness were such as to impose themselves on his senses and mind all at once."
b. "He asked himself where it had come from and how; the past provided no explanation, and the future could not justify it."
c. "How could he have dreamed up this incredible happiness? He or any human being? It was a strange, unique happiness, as though it were a private secret he had been given."
d. "How was it that this incredible happiness had overwhelmed him? How long would he have to carry it on his shoulders? Would it keep depriving him of work? friends, sleep, and peace of mind?