Plz help me ans Q2i
Q2ii
Q2iii

Dear student,
Please find below the answer:

2. i. The correct option is (d). The gamete formation in females begins before birth i.e. during early embryonic stages. It is completed only after a girl hits puberty. 
ii. The correct option is (d). The zygote is formed by the union of male and female gametes and so, it is diploid with 46 chromosomes and not 23.
iii. The correct option is (b).

Hope this information clears your doubt.
Regards.