Question

When faced with a sudden drop in environmental temperature, an endothermic animal will:

a. experience a drop in its body temperature

b. wait to see if it goes lower

c. increase muscle activity to generate heat

d. add fur or fat to increase insulation

Short answer

The correct answer is (c) increase muscle activity to generate heat

When faced with a sudden drop in environmental temperature, an endothermic animal will increase muscle activity to generate heat (SHIVERING).

Step-by-step solution

Step1. Introduction 

Endothermic animal capable of maintaining a relatively constant internal body temperature.

Explanation for correct answer 

Shivering is a bodily function in response to cold and extreme fear in warm-blooded animals. When sudden drop in environmental temperature, an endothermic animal will increase muscle activity to generate heat. Endothermic animal capable of maintaining constant internal body temperature.

Explanation For Incorrect option  

a. experience a drop in its body temperature

Having a temperature that's too low can lead to a dangerous condition called hypothermia. When faced with a sudden drop in environmental temperature, an endothermic animal is not experience a drop in its body temperature.

b. wait to see if it goes lower

When faced with a sudden drop in environmental temperature, an endothermic animal is not wait to see if it goes lower, they will increase muscle activity to generate heat.

d. add fur or fat to increase insulation

When faced with a sudden drop in environmental temperature, an endothermic animal is not add fur or fat to increase insulation.