Final answer:
Homeostasis is the process by which the body maintains a steady state and keeps its functions within a certain range. It involves constant adjustments to changes in the body to ensure equilibrium is maintained. Hence option A is correct.
Step-by-step explanation:
Homeostasis refers to the ability of the body to maintain a stable internal environment despite external changes. It involves the regulation of various physiological processes to keep conditions within a narrow range that is conducive to the proper functioning of cells and tissues. Homeostasis ensures that variables such as temperature, pH, and nutrient levels are kept within optimal limits, allowing the body to achieve a state of equilibrium or "steady state." The body continuously monitors and adjusts these internal conditions to support the overall health and function of the organism.
Anabolism (Option A) and catabolism (Option B) refer to metabolic processes involving the synthesis and breakdown of molecules, respectively. Hemostasis (Option C) specifically relates to the regulation of blood flow and prevention of bleeding.