Option 1: Shark - Sharks are cold-blooded animals, meaning their body temperature is regulated by the temperature of their environment. They do not generate their own body heat.

Option 2: Snake - Snakes are also cold-blooded animals. They rely on the external environment to regulate their body temperature, absorbing heat from the sun or seeking shade to cool down.

Option 3: Bat - Bats are warm-blooded animals. They have the ability to regulate their body temperature internally, regardless of the external environment.

Option 4: Ascorbic - The term "Ascorbic" does not represent any known animal. It is not relevant to the question.

The correct answer is option 3, Bat, as bats are warm-blooded animals capable of maintaining a constant body temperature independently of their environment.