Answer:
The correct option is A.
Explanation:
Alligators generally feed on variety of foods, such as small amphibians, birds, fish etc. To catch these preys, alligators usually disguise by immersing all their bodies inside water with only their eyes and noses showing. They will stay perfectly still in that position until a prey come along, then they will quickly attack the prey.
Alligators are quick and efficient predators. This technique that the alligators used to catch their preys enhances their survival and competition for food.
In addition, alligators depends on their external environments to regulate their body temperature. They can use sun as well as migration to warmer water to regulate their body temperature.