Paragraph B

        There are many reasons why you should walk to work instead of drive.  First of all, it is cheaper, because you don’t have to pay for gasoline.  An average American can save $500 walking to work.  Second of all, it’s much healthier.  You can get exercise every day while you walk.  Finally, and most importantly, it’s good for the environment.  But if it rains, then it’s not so convenient.

Topic Sentence:

        First Supporting Idea:

                Example:

        Second Supporting Idea:

                Example:

        Third Supporting Idea: 

                Example:

Misplaced sentence: