The correct answer is (c).
Marriage is a social institution in which a man and a woman establish a formal relationship to the exclusion of others. It is a way of regulating sexual behavior, providing for the care and support of children, and transferring property and status.
The seeds of the institution of marriage lie in man’s quest to know the maternity and paternity of children. In ancient times, it was important to know who the parents of a child were in order to ensure that the child was cared for and that the family line was continued. Marriage provided a way to establish paternity and maternity, and to regulate sexual behavior.
Option (a) is incorrect because it only mentions the maternity of children. Option (b) is incorrect because it only mentions the paternity of children. Option (d) is incorrect because it is not a valid option.