Was it in the grand closing ceremony __________ people bathed themselves in a sea of abundant happiness?

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

Was it in the grand closing ceremony __________ people bathed themselves in a sea of abundant happiness?

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

 Was it in the grand closing ceremony __________ people bathed themselves in a sea of abundant happiness?

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

Was it in the grand closing ceremony __________ people bathed themselves in a sea of abundant happiness?