Question

Which of the following describes a response to external stimuli?

a rabbit runs away from a fox that is chasing it



a woman drinks water when she is thirsty



a boy eats food when he is hungry



a person yawns when oxygen levels in the blood are low

Answer 1

a rabbit runs away from a fox that is chasing it

Step-by-step explanation:

An external stimulus is a stimulus that originates from outside the organism. For example, light is an external stimulus

Answer 2

a rabbit runs away from a fox that is chasing it is external stimuli

Thirst and hunger are internal stimulation caused by hypothalamus of human brain
Yawning is a process occuring due to low oxygen levels in the blood which is also internal factor