| List-$I$ | List-$II$ |
| $(a)$ Diaphragms | $(i)$ Inhibit ovulation and implantation |
| $(b)$ Contraceptive pills | $(ii)$ Increase phagocytosis of sperm within uterus |
| $(c)$ Intra Uterine Device | $(iii)$ Absence of menstrual cycle and ovulation following parturition |
| $(d)$ Lactational amenorrhea | $(iv)$ They cover the cervix blocking the entry of sperms |
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