.The singer became famous in the early 1980s, ______ the classical music was better than pop music.

1. A.
   which
2. B.
   when
3. C.
   that
4. D.
   where

.

The singer became famous in the early 1980s, ______ the classical music was better than pop music.

  A. which        B. when      C. that     D. where