List three techniques that have been developed to prevent pregnancy. Which one of these techniques is not meant for males? How does the use of these techniques have a direct impact on the health and prosperity of a family?

Explanation

Three techniques to prevent pregnancy are:
(i) Barrier method . Use of condoms either by male or female during sexual mating.
(ii) Use of copper-T device by the females in their uterus.
(iii) Surgical method by male or female.
Use of copper-T is not meant for males.
By use of these techniques a family will have lesser number of children so their economic condition will be better. Such family will have healthy children as lesser number of children in a family will get more attention from the presents and will be cared for in a better way. It also helps to control the population.