Question

what is one example of a response?
water lost from the lungs during breathing
the angle of the sun changing during the day
outside temperature dropping at night
ivy growing around the pole of a fence

Explanation:

In biology, a response is a living organism's reaction to a stimulus. The first option is a passive physiological process, while the second and third are non-living environmental changes. Ivy, a living plant, growing around a fence pole is a growth response (thigmotropism) to the stimulus of the pole.

Answer:

D. Ivy growing around the pole of a fence