Answer:
2
Explanation:
When blood sugar (glucose) rises, the pancreas releases insulin into the bloodstream which helps in lowering the blood sugar level either by storing the excess glucose as fat or as glycogen.
This type of mechanism is regarded as a negative mechanism. It helps to regulate blood sugar level.
Therefore, the increase in insulin level when there's an increase in blood sugar level (glucose) can best be explained by a feedback mechanism that regulates blood glucose level.
