Question

question 7 of 11 how do spermicides work to prevent pregancy? none of the above changes the hormone levels in the female kills the sperms provides a barrier so the sperm cannot reach the egg

Explanation:

Spermicides are substances that work by killing sperm cells (or inactivating them) to prevent fertilization. Changing hormone levels is how hormonal contraceptives work, and providing a barrier is the mechanism of methods like condoms or diaphragms. So the correct mechanism for spermicides is killing sperms.

Answer:

kills the sperms