Read the passage below. Then answer the question that follows.
Peter and Bobby were having a great afternoon of throwing the football around in the backyard. Their parents warned them to be careful and told them no throwing the ball in the house. Later, after it started raining, the boys moved their game to the living room. """AFTER A LONG THROW THEIR MOTHERS FAVORITE VASE WAS BROKEN.""" When she got home, she began questioning each of her sons about what had happened.

What is the effect of the use of passive voice in the sentence in bold?

A: To avoid revealing how the mother reacted
B: To avoid revealing who broke the vase
C; To focus on exactly what happened to the vase
D: To scientifically explain the force and velocity of the ball