Reduction in blood flow to a muscle fiber would have the greatest effect on reduction in blood flow to a muscle fiber would have the greatest effect on both slow and fast oxidative fast oxidative fibers slow oxidative fibers fast glycolytic

Slow oxidative fibers

Explanation:

Slowly contracting fibers or red fibers (Type I): they have a high aerobic resistance, are very efficient in the production of energy from the oxidation of carbohydrates and fats. They produce the energy necessary for muscle contraction and relaxation while oxidation lasts, which is why they are mobilized for activities of low intensity and long duration. They are fibers that are excited with some difficulty, take time to activate, contract with little force and are highly resistant.

Rapid contraction fibers or white fibers (Type II): they have a relatively poor aerobic resistance. They are better adapted to get energy through anaerobic metabolism (without the presence of oxygen). They generate more strength, but they tire easily due to their limited resilience. These fibers are mobilized in works of short duration and high intensity and are involved in the work of strength. It is important to clarify that the intensity of the effort is what sets the guidelines for one type of fiber or other to come into operation. When the first ones are exhausted, the remaining ones come into operation

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.