Respuesta :
Coyote is the canine species of North America, which is close member of wolf. The sound of the hawk are best detected by the ears of coyote.
What is stimulus?
The event generally evokes a functional reaction in the body.
It can be also defined as the factor that sufficiently evokes a behavioral response in the organism.
The external stimulus is the ears of a coyote best able to detect the sound of a hawk.
Thus, the correct answer is D.
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