The doctor will have prescribed a form of birth control, either tablets, the injection, the implant or an IUD. Birth control is used to prevent unwanted pregnancies and comes in different types as listed above. If Rita wanted to make sure she would definitely never get pregnant again she could choose to be sterilized or have a hysterectomy.
A to reach many people it’s not c because it’s only one message and your not accusing people it could be b but that’s not really a memo so it should be a because a memo is delivering a message to a large group that can be passed on