Respuesta :
The correct option is B. Mike joined the Army, and he became more disciplined during the training. The correct way to connect these two clauses is to introduce a conjunction "and." A is incorrect because there should be a comma/conjunction between the words Army and he. C is incorrect because that semi colon is just randomly and incorrectly placed without a context. D is incorrect because there should also be the word "and" before "he."
Answer:
The correct option is B. Mike joined the Army, and he became more disciplined during the training.
Explanation:
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