Identify the human developmental stage shown as well as the related right place of its occurrence in a normal pregnant woman and select the right options for the two, together.

Options

A. `{:("Developmental stage","Site of occurrence"),("Late morula","Middle part of fallopian tube"):}`
B. `{:("Developmental stage","Site of occurrence"),("Blastula","End part of Fallpian tube"):}`
C. `{:("Developmental stage","Site of occurrence"),("Blastocyst","Uterine wall"):}`
D. `{:("Developmental stage","Site of occurrence"),("8-celled morula","Starting point of Fallopian tube"):}`

Answer

C

Explanation

After fertilisation, a single-celled zygote develops into a multicellular structure called blastocyst. This blastocyst then gets embedded in the endometrium of the uterus and the process is known as implantation.