The correct answer is A. He urged them to be quiet and listen to his words.
The word “urge” means to strongly encourage someone to do something. In this case, the speaker is strongly encouraging the listener to be quiet and listen to his words.
The word “ask” means to request something from someone. In this case, the speaker is requesting the listener to be quiet and listen to his words.
The word “request” means to ask for something in a polite way. In this case, the speaker is asking the listener to be quiet and listen to his words in a polite way.
The word “demand” means to require someone to do something. In this case, the speaker is not demanding that the listener be quiet and listen to his words. He is simply urging them to do so.