Question

which phrase best defines homeostasis?
the ability of an organism to find its own food
the maintenance of an organism’s external environment within broad limits
the maintenance of an organism’s internal environment within certain limits
the ability of an organism to find a mate

Explanation:

Homeostasis is defined as the process by which an organism maintains its internal environment (like temperature, pH, etc.) within stable, narrow limits. The first option is about finding food (related to nutrition/foraging), the second is about external environment (homeostasis is internal), the fourth is about mating (related to reproduction). So the third option matches the definition.

Answer:

the maintenance of an organism’s internal environment within certain limits