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An animal can respond to an external stimulus by moving toward or away from the stimulus. The diagram below is a model that represents this pathway in a particular animal.
Which of these best describes the interaction that occurs to allow the animal to respond to the external stimulus?
A.
The stimulus is received and interpreted by the nervous system, and the muscular system responds.
B.
The stimulus is received and interpreted by the integumentary system, and the skeletal system responds.
C.
The stimulus is received and interpreted by the respiratory system, and the muscular system responds.
D.
The stimulus is received and interpreted by the circulatory system, and the skeletal system responds.
A.
The stimulus is received and interpreted by the nervous system, and the muscular system responds.