Aspeech that compels the audience to take action is a

A speech that compels the audience to take action is a PERSUASIVE SPEECH.

Explanation:

A persuasive speech is highly motivated kind of speech. Its main goal is to make the audience do something, change or adopt an opinion (or even just to make spectators think of something). Topics used in a persuasive speech are almost always very delicate ones and the ones we can discuss. A persuasive speaker is a person trained to perform in front of the audience and try to transmit them his opinion. There are numerous techniques to improve your power of convincing others.

Normally, persuasive speakers are very well prepared to talk about the subject. They are informed and have very strong arguments. They intend to talk to the audience, to interact with them. Some effective methods are to talk directly to them, to make them questions, to make good examples. It is essential to be self-confident, to have an attitude and a good public performance.