Question

Which are responses to internal stimuli? Check all that apply.

Answer 1

The answer is "A child has a fever of 101°F." (reacting to an illness) and "An owl sleeps in a tree." (reacting to tiredness)

Answer 2

Internal stimuli causes a response within an organisms body. Among the choices given only one of them is an effect because of an internal stimuli, which is a child having a fever. The internal stimuli that cause such a response could be a bacteria or virus. 

If you consider the other like the chipmunk running and owl sleeping in a tree, those two are responses to predators, which are outside the body. A dog panting and snake moving to a sunny rock is a response to the temperature of their environment, which is outside the body as well.