Final answer:
Behavior that is a response to an external stimulus is an action taken by an organism based on something in its environment. A snake hiding under a rock on a hot day is an example of this behavior.
Step-by-step explanation:
A snake hides under a rock on a hot day.
Behavior that is a response to an external stimulus is an action taken by an organism based on something in its environment.
For example, in the given options, the behavior of a snake hiding under a rock on a hot day is a direct response to the external stimulus of high temperature. The snake is seeking shelter to escape the heat and protect itself.
Learn more about External Stimulus