Answer:
D - vasodilation
Vasodilation is the widening of the blood vessels, it results from relaxation of smooth muscle cell within the vessel walls. It's not an example of negative feedback mechanism
Step-by-step explanation:
What is homeostasis
It's a tendency of an organism or a cell to regulate it's internal environment and also maintain equilibrium using a system of feedback controls.
There are two types of feedback mechanism
We have both positive and negative feedback mechanism
The negative feedback mechanisms in living things regulate critical body processes.
Examples are : body sweating, body shivering, regulstion in sugar level.