question 15 a dog barking when the door - bell rings is an example of... a cell organization b response to a…

Brief Explanations:

A dog barking when the door - bell rings is a reaction to the external stimulus of the door - bell sound. Homeostasis is about maintaining a stable internal state, and cell organization is about the structure of cells. This situation represents a response to a stimulus.

Answer:

B. response to a stimulus