Concept:Cold-blooded animals cannot produce enough internal heat to keep a constant body temperature.
They rely on outside sources such as the sun to warm their bodies.
Explanation:Mammals like the cat and the whale are warm-blooded.
Birds are also warm-blooded animals.
Reptiles, however, are cold-blooded.
The lizard is a reptile, so it depends on its surroundings for body heat.
This is why lizards bask in the sun to raise their body temperature.
Answer:B. Lizard