The best method to improve the genetic quality of mankind is

Which of the following means of reducing birth-rate is not legitimate in India?

Consider the following statements regarding contraception and answer accordingly:
$(1)$ Medical Termination of Pregnancy $(MTP)$ is considered safe during the first trimester.
$(2)$ Lactational amenorrhea is highly effective for up to $6$ months,not $2$ years.
$(3)$ Intrauterine Devices $(IUDs)$ like Copper-$T$ are effective contraceptives.
$(4)$ Emergency contraceptive pills are taken within $72$ hours of unprotected intercourse,not for a week.
Which two statements are correct?

If a vasectomized man attempts rape,then the presence of which of the following confirms it?

In the context of amniocentesis,which of the following statements is incorrect?

Sex determination using Barr bodies is possible through which of the following methods?