Hepatitis$-B $and $HIV$ spreads through

What are assisted reproductive technologies $\rm {(ART)}$ ? Give its importance and which methods come under it ?

Which of the following method is used when male partner is unable to inseminate into the female partner due to the low sperm count?

In which of the following techniques, the embryos are transferred to assist those females who cannot conceive$?$

In reproduction of a test tube baby