Suggest some methods to assist infertile couples to have children.

Explanation

(i) In vitro fertilization (Test-tube baby):- It involves fertilization of ovum outside the body (ie, in invitro conditions in the lab) followed by embryo transfer into the uterus of a female.
(ii) Gamete intra fallopian transfer. It involves the collection of ovum from a donor female and transferring it into the fallopian tube of another female who cannot produce but can provide suitable environment for fertilization and further development of the embryo.
(iii) Intra cytoplasmic sperm injection Sperm is directly injected into the mundet proper conditions.
(iv) Artificial insemination it involves collection of women either from husband oraha donor which is artificially introduced either into the vagina or into the uterus of the female. So that fertilization happens and further development of zygote takes place