Diaphragms, cervical caps and vaults work by:
ABlocking entry of sperms through the cervix
BInhibiting ovulation
CKilling sperms inside the uterus
DIncreasing phagocytosis of sperms in the uterus
Answer & Solution
Correct answer: A. Blocking entry of sperms through the cervix
These rubber barriers are inserted to **cover the cervix** during coitus, blocking sperm entry. They are reusable and often paired with spermicidal creams to improve efficiency.
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