Bob Jones Recently Signed a Lease for a Studio Apartment

Bob Jones recently signed a lease for a studio apartment located in Manhattan. His studio is located on the top floor of a five-story brownstone converted into individual apartments and studios. A skylight in his loft has a crack between the plexiglass cover and the roof. Bob has moved his belongings away from the area beneath the skylight because rain and snow leak into the apartment. Because the heating system cannot compensate for the draft from the crack, the nighttime temperature in Bob's apartment is usually 10 degrees above the outside temperature. This January, the nighttime temperature in Bob's apartment has been, on average, 42 degrees. Which would be the best source of law for Bob to look to determine his rights?

A) The U.S. Constitution
B) The Code of Federal Regulations
C) New York's Uniform Residential Landlord Tenant Act
D) Decisions of the U.S. Supreme Court