Answer:
A: Exogenous insulin injections
Step-by-step explanation:
Insulin injections are used by people who suffer from diabetes. This condition is the result of the liver not producing enough/any insulin. Insulin regulated the release or storage of glucose, as the body needs it.
If there is not enough insulin, there will be too much glucose in the bloodstream, which can be extremely unhealthy.
Polyphagia is a condition where the person feels a sudden rise in appetite. This can be caused by a reduction in blood-glucose levels, as a result of the insulin.