Answer:
Muscle Fibers Type I
Explanation:
Muscle fibers in the body are classified based on how they produce energy or generate force. The Muscle Fibers type I, type I C, type IIC, type IIAC, type IIA, type IIA and type IIX are generally classified as being either slow-twitch or fast-twitch.
Muscle Fibers Type I is generally a slow twitch fiber. They can provide their own source of energy and can sustain force for an extended period of time, but they are not able to generate a significant amount of force.
However, the activation threshold is quite low, this means that while they get recruited first when a muscle contracts, they are unable to generate the amount of force necessary for the specific activity. They are, therefore, bypassed through the principle of selective recruitment and the fast-twitch muscle fibers are engaged.

When body releases Glycagon, It <u>increases the blood sugar/glucose levels.</u>(Option B)
The Alpha cells of the Pancreas secretes the hormone named Glucagon. It increases the blood sugar levels. If levels of blood glucose gets low, then α-cells secretes low glucagon. This can be treated with exercise and a protein diet which stimulates the secretion of glucagon.
- This hormones fits into receptor sites on cells membranes and activates the enzyme inside the cell which convert glucagon to glucose.
- The glucose then passes out of the cells and into the blood, raising blood sugar levels.
✒ Other than this hormone, the beta cells secretes the insulin hormone and delta cells secrete the growth inhibiting hormone (GHIH-somatostatin).
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Answer:
They influence Metabolic rate
I think it is D
Hope the answer is right!
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