The correct response is: To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
Frogs rely on their skin for gas exchange, a process known as cutaneous respiration. This means they must keep their skin moist to effectively absorb oxygen and expel carbon dioxide. As a result, they tend to prefer habitats that provide sufficient moisture, such as wetlands, ponds, and other watery environments.