Diaphragms are contraceptive devices used by females. Choose the correct option from the statements given below:
(i) They are introduced into the uterus.
(ii) They are placed to cover the cervical region.
(ii) They act as physical barriers for sperm entry.
(iv) They act as spermicidal agents.
(ii) and (iii)
A diaphragm is a soft, cup-shaped rubber device used by a woman to cover the entrance to the uterus. It is smeared with spermicide before use. It prevents sperms from reaching the egg.