Which of the following is the correct way to rewrite the following run-on sentence?
mike joined the army he became more disciplined during the training.
a. mike joined the army and became more disciplined; during the training.
b. mike joined the army, and he became more disciplined during the training.
c. mike joined the army, he became more disciplined during the training.
d. mike joined the army and more disciplined during the training.

B. Mike joined the Army, and he became more disciplined during the training.

Explanation:

Option B is the correct way to rewrite the run-on sentence because the two main independent clauses "Mike joined the Army" and "he became more disciplined during training" are joined by a connecting word "and" and a punctuation mark(comma). Both clauses are related thoughts.  In other options the clauses are not joined correctly.

that the mashine was talking hahahaha

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.