Read the excerpt from chapter 7 of The Strange Case of Dr. Jekyll and Mr. Hyde.

The middle one of the three windows was half-way open; and sitting close beside it, taking the air with an infinite sadness of mien, like some disconsolate prisoner, Utterson saw Dr. Jekyll.

"What! Jekyll!” he cried. "I trust you are better.”

"I am very low, Utterson,” replied the doctor drearily, "very low. It will not last long, thank God.”

"You stay too much indoors,” said the lawyer. "You should be out, whipping up the circulation like Mr. Enfield and me. (This is my cousin—Mr. Enfield—Dr. Jekyll.) Come now; get your hat and take a quick turn with us.”

"You are very good,” sighed the other. "I should like to very much; but no, no, no, it is quite impossible; I dare not.”

Read the excerpt from chapter 10 of The Strange Case of Dr. Jekyll and Mr. Hyde.

Under the strain of this continually impending doom and by the sleeplessness to which I now condemned myself, ay, even beyond what I had thought possible to man, I became, in my own person, a creature eaten up and emptied by fever, languidly weak both in body and mind, and solely occupied by one thought: the horror of my other self.

How does Dr. Jekyll’s confession answer questions about his strange behavior toward Mr. Utterson and Mr. Enfield?

It reveals what frightened the men when they looked in the window.
It reveals where Jekyll obtained the chemicals to change himself.
It reveals how Mr. Utterson found and disclosed Hyde’s true identity.
It reveals why Jekyll looked so sad and would not join the men.