human
Question: A fever is a response to a disease-causing agent infecting the body. Raising one's body temperature changes the shape of enzymes in the agent so it cannot reproduce. Which statement best describes a fever?

Choices:
A) A fever is an internal response to an external stimulus.
B) A fever is an internal response to an internal stimulus.
C) A fever is an external response to an external stimulus.
D) A fever is an external response to an internal stimulus.
gpt
The correct answer is 1: A fever is an internal response to an internal stimulus..