What Should You Do If You Get Stuck While Writing

What should you do if you get stuck while writing a paragraph?

A) Read what you wrote aloud and continue talking to see if you can state what you're trying to say.
B) Cross out the sentences that you've written and start the paragraph over.
C) Go back to your sources and select a few quotations to add to the paragraph.
D) Add a few more sentences that restate what you've already written.