Question

below are diagrammatic representations of feedback mechanisms (also referred to as feedback loops). how are these different? signal is sent. signal is sent. stimulus positive feedback response stimulus negative feedback response stimulus is increased. stimulus is decreased. a signal is never sent in the positive feedback loop. the stimulus is increased in the negative feedback loop. a signal is never sent in the negative feedback loop. the stimulus is increased in the positive feedback loop.

Explanation:

Positive feedback loops amplify the initial stimulus, increasing it as the loop progresses. Negative feedback loops work to counter - act the initial stimulus, decreasing it to maintain stability. In the given diagrams, the positive feedback loop shows the stimulus being increased, while the negative feedback loop shows the stimulus being decreased.

Answer:

D. The stimulus is increased in the positive feedback loop