Answer:
C. thoughts kept coming, he did not want to think, feverish eyes
Step-by-step explanation:
Option C is the correct answer because it is the detail from the text that best develops the character.
From the text, we discover that the above details in Option C actually develops the character. Character development in literature refer to the changes that is seen in a character over the course of the story. Such changes occur as a result of the character's actions and experiences.
Option C reveals the state of the character over the course of the events that took in the story. The description given concerning him tells the reader more about the character and the condition he was at that moment.