The answer to your question is the 4th one
Answer:
Hello your answer is A, B, D <em>Hope these answer help! and have good day.</em>
You didn't put any answers, but I do know it is polite to greet the persons as they come on stage, and clap or cheer when they finish a song. It is also a good idea to put any electronic devices in sleep mode or simply turn them off.
