e. more than one of the above
Explanation:
Skipping lunch leads to starvation leads to a decrease in blood glucose level and low energy levels.
This lack of glucose increases metabolism of reserved fat for energy production. There is an increased oxidation of fatty acids stored in the liver which leads to increased production of ketone bodies from acetyl CoA. Brain metabolism also follows the same path where fatty acids are converted to ketone bodies.
Further, impaired insulin secretion from beta cells and elevation of epinephrine during starvation activates hormone-sensitive lipase
The activity of glycogen synthase is also increased during starvation due to increased glycogen metabolism.
However, insulin secretion is affected due to starvation.
