Question

part b - lo 2. compare and contrast the advantages, disadvantages, and effectiveness of different types of contraception in preventing pregnancy and sexually transmitted infections, and describe emergency contraception and its use
if used correctly, barrier methods prevent sperm from reaching the egg. thus conception cannot occur. in addition, some barrier methods are combined with a spermicide to kill much of the sperm.
which of the following is a true statement about a barrier method of birth control?
the diaphragm can be left in place for multiple acts of intercourse without the need to apply additional spermicide.
spermicides (when used perfectly and alone) are more effective at preventing pregnancy than male condoms (when used consistently and correctly).
cervical caps are relatively inexpensive, and they do not need to be fitted by a trained practitioner.
spermicides are most effective when used with another barrier method (e.g., a condom or a diaphragm).
the contraceptive sponge provides extensive protection from all stis

Explanation:

1. A diaphragm usually requires additional spermicide for multiple acts of intercourse, so the first option is false.
2. Spermicides alone are less effective than male condoms when used consistently and correctly, so the second option is false.
3. Cervical caps usually need to be fitted by a trained practitioner, so the third option is false.
4. Spermicides are more effective when used with another barrier method as they can enhance the overall protection against sperm reaching the egg, so the fourth option is true.
5. The contraceptive sponge does not provide extensive protection from all STIs, so the fifth option is false.

Answer:

Spermicides are most effective when used with another barrier method (e.g., a condom or a diaphragm)