Question

which outcome could be the goal of a negative feedback loop?
○ to release hormones
○ to return a substance to a normal level
○ to enhance an action of a stimulus
○ to signal receptors to take in sensory information

Explanation:

Negative feedback loops in biology (a subfield of Natural Science) aim to maintain homeostasis by counteracting changes and returning a system (or substance level) to its normal state. Releasing hormones is a process, not the goal of negative feedback. Enhancing a stimulus action is positive feedback. Signaling receptors for sensory info is not the goal of negative feedback loops. So the correct option is the one about returning a substance to normal.

Answer:

B. to return a substance to a normal level