Correct option:(C)Tubectomy

Solution:

• Coitus interruptus is a method of birth control in which penis is pulled out before ejaculation.
• Rhythm method is also called as calendar rhythm method.
• It is also a type of birth control method.
• It involves keeping record of menstrual cycle to predict time of ovulation.
• Tubectomy and vasectomy are surgical method of birth control.
• During tubectomy, female fallopian tubes are clamped and blocked so that egg does not reach the junction of the ampulla and isthamus.
• During vasectomy, male vas deferens are clamped and blocked so that sperm does not enter urethra for fertilization.