Multiple Choice
Infertility due to blocked Fallopian tubes is most commonly caused by which of the following?
A) untreated sexually transmitted infections that lead to pelvic inflammatory diseases
B) irregularity of a woman's menstrual cycle
C) sperm cells that cannot swim well enough to move up the Fallopian tubes
D) a zygote that fails to implant on the uterine wall
Correct Answer:

Verified
Correct Answer:
Verified
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