Question

in order for the body to respond to external stimuli, it must first receive the stimuli through the ______.
a. kidneys
b. heart
c. senses

Explanation:

External stimuli are detected by sensory organs (senses like sight, hearing, touch), which send signals to the nervous system for response. Kidneys filter blood, and the heart pumps blood—neither receives external stimuli.

Answer:

C. senses