Under RA 9003, every barangay or cluster of barangays shall establish a facility for sorting and recovering recyclable and compostable waste, called a:

The correct answer is C. Materials Recovery Facility (MRF)

A Materials Recovery Facility receives segregated waste for further sorting, composting and recycling, so that only residual waste goes to sanitary landfills. RA 9003 requires one in every barangay or cluster of barangays.