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.
The answer is def D
Contact me for free answers just give me Brainly points .
Answer: D. dollar-merchandising planning
Hope this helps :D
Instrumental groups that exchange motivic ideas