What is the primary way that combination birth control pills work ...

[james0929]

What is the primary way that combination birth control pills work to prevent pregnancy?
 
  a. They create an artificial barrier to the cervix.
 b. They release chemicals that deactivate sperm.
 c. They prevent ovulation and thicken cervical mucus.
 d. They cause mucus to form in the fallopian tubes blocking fertilization.

Question 2

The following statement is descriptive of the contraceptive sponge:
 
  a. A prescription is required to obtain a contraceptive sponge.
 b. The sponge is inserted after intercourse and soaks up the male ejaculate.
 c. In order to have maximum effectiveness, the sponge should be left in for 6 hoursafter intercourse.
 d. Women who have already had children have higher effectiveness rates using thesponge.

[Brummell1998]

Answer to Question 1

c

Answer to Question 2

c

[james0929]

Gracias!

[peter]

TYSM