Answer:
2. the pancreas releases glucagon
Explanation:
its not 1 because insulin is used to decrease blood glucose levels.
its not 3 because the pituitary gland does not produce insulin and insulin is not needed
its not 4 because the pituitary gland does not release glucagon.
it IS 2. because the pancreas DOES produce glucagon and GLUCAGON is needed to move GLUCOSE into the blood stream.
