The term stimulus comes from a latin word, stimulare, which means “to goad, prod, or urge”. explain how this meaning relates to stimulus

The term stimulus is also called impulse stimulare, means to goad, prod, or urge dies in Latin. This relates to stimulus because it provoke a compulsion to make an organism change its behavior. The urge relay a potential internal stimuli occurring in its own body to make a move. An example of this is hunger and thirst where the body send signals for a need of more energy and hydration. This causes human and animal to search for food and water.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: