What does Paris think killed Juliet in Act V of Romeo and Juliet?

A. Nothing, he knows she is not really dead.
B. Suicide, because he did not want to marry Paris.
C. A broken heart over Romeo
D. Sorrow over Tybalt’s death

D. Sorrow over Tybalt's death

In Act V of Romeo and Juliet, Paris believes that Juliet died from sorrow over Tybalt's death. This is option D.