A. I believe hurts has a different tense than the rest of the sentence which makes it not parallel.
One of the main reasons for the Constitutional Convention was the weakness of the federal government under the Articles of Confederation. After the Revolutionary War, it became obvious that the federal government did not have enough power to sucessfully mediate between self-interested states. It also did not have the power to enforce tax collection, which left it severely underfunded. These were major reasons for the Constitutional Convention and the drafting of the Constitution.
Answer:
The practice of sports should be done to stimulate benefits in the body and therefore it should, with some exceptions, be practiced frequently and with an intensity that gradually increases.
Explanation:
The introduction of the sentence presents the reason why the practice of sports should be encouraged in an individual's life. Right after the introduction, an interruption is made through the "with some exceptions" part, which is separated from the main part of the sentence by commas.
The interruption is a sentence, or a word, that interrupts the flow of thought that the sentence was establishing. In the case of the question above, the interruption shows that there are exceptions to the duty to exercise frequently.
