Question

negative feedback loops are able to maintain homeostasis because they... do not affect the body’s internal conditions. return internal conditions to the a set point. connect the nervous and the respiratory system. cause conditions to move away from the set point.

Explanation:

To determine the correct answer, we analyze each option based on the concept of negative feedback loops in maintaining homeostasis:

• Option 1: Negative feedback loops do affect internal conditions (to regulate them), so this is incorrect.
• Option 2: Negative feedback loops work by detecting deviations from a set point and initiating responses to bring internal conditions back to that set point, which is key for homeostasis. This matches the function of negative feedback.
• Option 3: Negative feedback loops are not about connecting the nervous and respiratory systems; they are a general regulatory mechanism, so this is incorrect.
• Option 4: Negative feedback loops counteract deviations, so they bring conditions back to the set point, not move them away. This is the opposite of their function, so it's incorrect.

Answer:

B. return internal conditions to the a set point.