Which hormone allows the cells in your body to extract glucose from your blood

A)  insulin
B)  leptin 
C)  CCK
D)  ghrelin

Insulin is the hormone that allows cells in the body to extract glucose from the blood. Insulin is produced by the pancreas and released in response to rising blood glucose levels after a meal. Insulin allows cells to take up glucose and use it for energy or store it for later use. Without insulin, glucose would build up in the blood and not be utilized by the cells, leading to high blood sugar levels and potentially dangerous health outcomes.