The following division paragraph is complete except for a topic sentence. Pick the best topic sentence from the answer choices.

Your optometrist
determines what prescription your eyes need. Then, you
pick out the frames that you like. Based on which frames
you choose, the actual lenses are then cut to fit your
prescription. Without all three of these things, your glasses
would be ineffective.

A. I like wearing glasses.

B. Every pair of glasses has three essential pieces.

C. It's not scary to get new glasses.

D. Glasses take a lot of effort to make.