Question

The following sentence needs to be revised, edited, and proofread. Its a good idea to brush and floss you're teeth at least twice a day so you're teeth are not full of caveteis and your gums arent swollen and infected and you dont have bad breathe. Choose the most effective revision. It is a good idea to brush and floss your teeth at least twice a day in order to avoid cavities, have healthy gums, and so that you don't have bad breath. Its a good idea to brush and floss you're teeth at least twice a day in order to avoid caviteis, gum disease, and bad breathe. It's a good idea to brush and floss your teeth at least twice a day so your teeth are not full of caveties and your gums aren't swollen and infected and you don't have bad breath. It is a good idea to brush and floss your teeth at least twice a day in order to avoid cavities, gum disease, and bad breath.
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Answer 1

The most effective revision is the last one, “it is a good idea to brush and floss your teeth at least twice a day in order to avoid cavities, gum disease, and bad breath.”