Question

Which is the best example of an animal responding to an external stimulus? Select one:

a caterpillar turning into a butterfly
a horse eating hay
a cat scratching its belly
a dog drinking water

Answer 1

Answer:cat

Step-by-step explanation:

Answer 2

Answer: a cat scratching it's belly

Explanation: in order to scratch its belly it needs to itch. If it itches it is feeling something on it's body therefore and external stimulus