The correct option is C Artificial insemination
In case of a couple where the male is having a very low sperm count, fertilisation could be carried out in vivo by artificial insemination. In this, the semen collected either from the husband or a healthy donor is artificially introduced either into the vagina or into the uterus of the female.
In IUT (intrauterine transfer), embryo with more than 8 blastomeres is transferred into the uterus.
Gamete intra fallopian transfer (GIFT) is a technique in which the female gamete is transferred from a donor into the fallopian tube of the female who cannot produce ova but can provide a suitable environment for fertilisation and development.
In intra cytoplasmic sperm injection (ICSI), a tiny needle is used to inject sperm directly into the egg and the embryo is formed in vitro.