To be honest I think it is B. Static Stretch is used to stretch muscles when the body is at rest.
Https://quizlet.com/12149291/chapter-12-the-cardiovascular-system-3-flash-cards/
This website could help you a ton! ^
The liver makes sure that blood glucose levels remain steady. But when blood glucose levels fall, the pancreas secretes glucagon. Therefore the answer to your question in the pancreas.