Which of the following is used for emergency contraception?

Condoms are made up of a thin rubber/latex sheath which is used to cover:

What does the given figure represent?

Which of the following have been found to be very effective as emergency contraceptives,as they could be used to avoid possible pregnancy due to rape or casual unprotected intercourse if administered within $72$ hours?
$A.$ Administration of progestogens
$B.$ Progestogen-estrogen combinations
$C.$ $IUDs$ inserted within $72$ hours of coitus

In the rhythm method of birth control,the couple refrains from intercourse:

Which one of the following is the most widely accepted method of contraception in India at present?