Which occurs when the body responds to the environment by maintaining a stable internal environment despite changing external conditions?

The protection of internal environment from the harms of fluctuations in external environment is termed as HOMEOSTASIS.

Explanation:

External environment and its component fluctuate continuously, however, the organism resists and manage these changes by making adjustments to keep its own internal fluctuations within a narrow range thus protecting internal environment from harms of fluctuations.

it's not c. i took the quiz and got it wrong. so my best guess is b.

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