Which of the following is not an example of an organism responding to a stimulus?

a)a dog jumps when you accidentally drop a heavy object
b)squinting your eyes when walking into bright sunlight
c)your kidneys filter excess water from your bloodstream
d)algae in pond water moving toward a light source

An answer choice that is not an example of an organism responding to a stimulus would be;

B) squinting your eyes when walking into bright sunlight

Squinting your eyes in bright sunlight is an involuntary action, and does not require any kind of stimulus.

The answer is B

Explanation:

thats just the sun burning your eyes

a and b

dude i stopped reading after the first 7 words but hey you seem real smart thats awesome have a great day