Step-by-step explanation:
The student leader with responsibilities including programming, mediating roommate conflicts, providing on-call coverage, and an after-hours presence in the community is commonly referred to as a Resident Assistant (RA) or Resident Advisor. RAs are typically undergraduate students who live in on-campus housing and serve as a resource and support system for their fellow students. They play a crucial role in fostering a positive living environment and addressing various needs and concerns within the residential community.