Question

my friend and i went skiing, which was freezing, and then we enjoyed the cocoa that warmed us. independent restrictive nonrestrictive

Explanation:

The clause "that warmed us" narrows down which cocoa is being referred to—specifically the one that had the effect of warming them, rather than any general cocoa. This type of clause that limits the meaning of the noun it modifies is a restrictive clause.

Answer:

restrictive