The Purpose of Separating the Witnesses Is To

The purpose of separating the witnesses is to:

A) prevent one witness from being influenced by hearing what another witness says.
B) avoid the possibility that the witness will be intimidated by the police officer who is often allowed to remain in the courtroom.
C) protect the witness from personal harm that might come to him or her if allowed to remain in the courtroom.
D) give the witnesses an opportunity to go over his or her testimony prior to testifying.