In her persuasive speech, Wei Ling concluded with the following statement:So the next time you see flyers around campus announcing a blood drive, decide that this will be your moment to get involved—to do something worthwhile, to take a step that may help save someone’s life.What method of concluding her speech did Wei Ling use?

A.Extended example.

B.Appeal to action.

C.Internal summary.

D.Reference to the introduction.

正确答案：Appeal to action.