A) the sperm from reaching the egg
B) the sperm from leaving the male reproductive system
C) the sperm from surviving for many days in the female reproductive system
D) All of the above
Correct Answer: A
Solution :
[a] The Intra Uterine Device (IUD) causes a foreign body reaction in the uterus, thus leading to cellular and biochemical changes in the endometrium and uterine fluids. These changes impair the viability of the gamete and thus, prevent sperms from reaching the egg.
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