(i) No, lactational amenorrhea is a temporary contraceptive method based on natural infertility resulting from certain patterns of breastfeeding.
(ii) Lactational amenorrhea is the characteristics of breastfeeding mother only.
(iii) Sterilization is the permanent method of birth control. It includes surgical methods. i.e. tubectomy in females and vasectomy in males. These techniques are highly effective but their reversibility is very poor.

A flow chart showing negative feedback of estrogen and progesterone.

Hormonal control of female reproductive system.

(i) The septal nuclei or septum present in the amygdala is associated with sexual emotions.
(ii) Yes, it is necessary to guide and instruct the nature of HIV/AID, methods of its transmission, strategies to reduce the risk of human immunodeficiency virus infection and society related issues to the students in school.
(iii) Amygdala and hippocampus together from a region which was formerly called rhinencephalon but is also called emotional brain due to its association with emotional functioning.

Women are never responsible for determination of the sex of a child. moreover, it is not appropriate to ill-treat a woman for giving birth to a girl child, as both males and females are equally important for the balance of the nature and continuity of our species. all human-beings have 23 pairs of chromosomes.
A human sperm has 22 autosomes and one of the two types of sex chromosomes, i.e. either X or Y. On the contrary, human females have 22 autosomes that are almost same as males and contain two X-chromosomes. The sex of an individual is determined by the type of the sex chromosome(X or Y) contained by the sperm that fuses with the ovum.
If the fertilizing sperm has an X-chromosome, then the baby would be a female and if a sperm with Y-chromosome fuses with the ovum, it will develop into a male child. Thus, neither of the two senes are responsible for determination of the sex of a child.

Suggested methods for this couple include IVF, ZIFT, and AI.