Which of the following statement(s) describe(s) behavioral adaptation?
A: Eats a lot to generate body heat.
B: Bones of some organisms are hollow to reduce body weight.
C: Streamlined body of some organisms to reduce air or water resistance.

Answer: A. A only

A behavioral adaptation is an action an animal takes to survive.
Eating a lot (Statement A) is a behavior because it is something the animal does.
Hollow bones (B) and streamlined bodies (C) are physical parts of the body.
Physical features are called structural adaptations, not behavioral ones.
Therefore, only Statement A describes a behavioral adaptation.

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