According to our class, what do we call the fear of public speaking?

Why do people fear public speaking according to researchers?

A、

They don’t know what to speak about.

They lack self-confidence.

They fear the audience will reject them.

They lack public speaking skills.

What is the best way to overcome fear of public speaking according to the man?

According to our class, public speaking is at the top of lists of people's greatest fears.

What do we learn about public speaking from the conversation?