Answer: Option A
Step-by-step explanation:
There are several physiological factors affecting the behavior of an organism, which can change the normal behavior of the organism.
When the lizard was placed in the a box having different colored background then the lizards did not changed colored because they might have got scared, or the temperature suitable for the color change might not be available.
There can be any of the above stated factors responsible for not changing the body color of lizard.