In order to maintain homeostasis, water moves out of the cell so that the cell will reach equilibrium with its environment; option B.
Homeostasis is the process by which the body maintains a fairly constant internal environment despite changes that occur in its external environment.
Depending on the condition of the external environment, the body responds with various adaptive mechanisms to the environment.
In the given illustration, when an animal cell is placed in an environment with a 3% salt concentration, water may either move in or out of the cell in order for the cell to maintain equilibrium with its environment.
Since the concentration of the external environment is higher than inside the cell, water moves out of the cell so that the cell will reach equilibrium with its environment.
In conclusion, the cell uses the processes of homeostasis to maintain a fairly constant environment.
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