Answer:
They monitor government policies and actions and hold government accountable.
I believe the answer is: Brian Epstein
Brian Epstein was the first one who discovered the Beatles during their lunchtime performance at The Cavern Club. At that time, almost all label company in England refused to sign the Beatles. So epstein insisted on the professional look in order to make them look more presentable for the management and upper class audience.
Service Learning is doing something to learn
Community Service is doing something to improve
Social stratification<span> is a society's categorization of people into socioeconomic strata, based upon their occupation and income, wealth and </span>social status, or derived power.