Which term describes the body's regulation aimed at maintaining a stable internal state, often through feedback mechanisms?

• A. Need
• B. Primary Drives
• C. Instincts
• D. Homeostasis

Answer: (D)

The body's regulation aimed at maintaining a stable internal state through feedback mechanisms is homeostasis. It involves monitoring key variables like temperature, fluid balance, pH, and glucose, and using negative feedback to keep them near a set point. When a condition drifts, sensors and control centers trigger responses—such as sweating or shivering to adjust temperature or insulin release to manage blood sugar—so the internal environment stays within a narrow, healthy range. This focus on keeping the body's internal conditions steady through feedback distinguishes it from other concepts. A need describes a deprivation state that motivates behavior, primary drives are innate motivational states that push actions to reduce a deficit, and instincts are inherited patterns of behavior. None of these describe the ongoing regulation of internal conditions like homeostasis.