Which of the Following May Contribute to Keeping Police Officers

Which of the following may contribute to keeping police officers safe in the line of duty?

A) An increase in the use of body armor, which renders the wearer essentially "bulletproof," helps keep officers safe in the line of duty.
B) Professional criminals are unlikely to kill anyone, even a police officer, if they think it will be "bad for business."
C) Officers are safer in the line of duty with improved training to obtain information, obtain cover, and wait for backup before entering a potentially dangerous situation
D) A decrease in the stigma associated with mental health counseling keeps more police officers mentally and emotionally stable, so they are better able to avoid dangerous situations.