Question

which statement best explains why sensors (or senses) are necessary to produce a change in behavior?
a. organisms cannot respond to stimuli without a central nervous system.
b. stimuli must be responded to in order to be sensed.
c. stimuli must be sensed in order to produce a response.

Explanation:

Sensors (or senses) detect stimuli from the environment. For an organism to produce a behavioral change (response), it first needs to sense the stimulus. Option A is incorrect because not all organisms have a central nervous system but can still respond. Option B reverses the order—sensing comes before responding. Option C correctly states that sensing a stimulus is a prerequisite for a response.

Answer:

C. Stimuli must be sensed in order to produce a response