What is the biological definition of adaptation and why does an organism strive to adapt?

• A. Adaptation is a fixed genetic change.
• B. Adaptation is a conscious choice.
• C. Adaptation refers to a change in structure, function, or behavior by which a species or individual improves its survival in a specific environment; it's natural, fluid, ongoing; aims to satisfy homeostasis.
• D. Adaptation only occurs with exercise.

Answer: (C)