How does the muscle become fatigued?

Explanation:

when the functionality capacity of a muscle  over time is being reduced, then the muscle is said to be fatigued.  take for instance before experiencing muscle fatigue at the beginning of exercise you feel agile and very active, but overtime you begin to discover weakness in your muscles. muscle fatigue can be as a result of exercise or health conditions.

Muscle fatigue can occur anywhere in the body. here are some causes of muscle fatigue

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explanation:

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hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.