Identify the set of homeothermic animals.

The correct option is B

Bat, Pigeon, and Rabbit

The correct option is B.

Explanation for the correct option:

1. Homeotherms can only live when the internal body temperature is kept within a certain range.
2. These creatures have a constant, continuous body temperature that is unaffected by the outside temperature.
3. It includes birds and mammals.

Explanation of the incorrect option:

Option A:

1. Frog and fish are Poikilothermal.
2. Lion is a homeotherm.

Option C:

1. Pigeon is a homeotherm.
2. Lizard and tortoise are poikilothermal.

Option D:

1. Rat is a homeotherm.
2. Snakes and Crocodiles are poikilothermal.

Final answer: The set of homeothermic animals is Bat, Pigeon, and Rabbit