Implantation occurs after how many days of fertilization

Implantation occurs after how many days
of fertilization?
a) 3-5 days
b) 5-7 days
c) 7-9 days
d) > 14 days
Correct Answer - B
Ans.B. 5-7 days
About 6-7 days after fertilization the blastocyst attaches to the
endometrium, a process called as implantation or embedding.
Normal site of implantation is posterior wall of uterus close to
fundus.