Given below are two statements.

Statement I: Diaphragms, cervical caps and vaults are barriers made of rubber that are inserted into the female reproductive tract to cover the cervix during coitus.

Statement II: They prevent conception by inhibiting ovulation and implantation.

In light of the above statements, choose the most appropriate answer from the options given below.

Diaphragms, cervical caps and vaults are a form of birth control that is used by women to prevent pregnancy. They are inserted into the female reproductive tract to cover the cervix during coitus. This prevents conception by blocking the passage of sperms through the cervix to the ovum in the fallopian tube. It is important to use these barriers with a spermicide to increase their effectiveness.