As a Result of Playing Tennis in the Summer Heat

Multiple Choice

As a result of playing tennis in the summer heat without proper hydration, you have become very dehydrated. You are now in hypernatremia, a condition where your blood sodium levels are too high. Your brain tells you to drink water and, as a result, your blood sodium and hydration levels go back to normal. This illustrates

A) positive feedback.
B) stimulus reinforcement.
C) negative feedback.
D) diagnostic regulation.
E) both positive and negative feedback loops.