List any four methods of contraceptions used by humans. How does their use have a direct effect on the health and prosperity of a family

Four methods of contraception:
(l) Mechanical or barrier method OR Male or female condoms.
(ii) Use of hormonal preparations OR Oral pills/i-pill/Saheli.
(iii) Use of loop or copper-T OR IUCD.
(iv) Surgical method OR tubectomy/vasectomy.

Effect on health and prosperity:
(i) Health of n omen is maintained.
(ii) Parents can give more attention to their children.
(iii) More resources can be made available for the improvement in living standard.