Choose the answer that is properly punctuated and contains no run-on errors

Question

is is A: I hate gardening because it always gives me allergies.

or B:I hate gardening, it always gives me allergies.

Answer 1

"I hate gardening, it always gives me allergies," is two separate thoughts, although related. It would be appropriate to say either A or, "I hate gardening; it always gives me allergies.