Which one of the following options is correctly paired according to their mode of action? 

The Correct answer is Condom — Mechanical barrier.

Key Points

• Condoms act as a mechanical barrier by physically preventing the sperm from reaching the egg, thereby avoiding fertilization.
• They are made of materials such as latex, polyurethane, or lambskin, which provide an effective barrier to sperm and sexually transmitted infections (STIs).
• Condoms are one of the most widely used contraceptive methods and are effective in preventing unintended pregnancies and reducing the risk of HIV/AIDS and other STIs.
• They are easy to use, widely available, and do not require a prescription, making them a popular choice worldwide.
• Both male and female condoms are available, but male condoms are more commonly used.
• Condoms do not involve hormones, which makes them suitable for individuals who cannot or do not want to use hormonal contraceptives.

 Additional Information

• Contraceptive pills — Uterine device
  • This is incorrect because contraceptive pills do not act as uterine devices. Instead, they contain hormones (estrogen and progestin) that prevent ovulation, thicken cervical mucus, and thin the uterine lining to avoid pregnancy.
  • Contraceptive pills are an example of hormonal contraception, not a physical device.
• Copper T — Hormonal imbalance
  • This is incorrect because Copper T is a type of intrauterine device (IUD) that works by releasing copper ions, which are toxic to sperm. It does not cause hormonal imbalance.
  • Copper IUDs are non-hormonal and function as a long-term reversible contraceptive method.
• Tubectomy — Chemical barrier
  • This is incorrect because tubectomy is a form of permanent surgical sterilization in females. It involves blocking or cutting the fallopian tubes to prevent the egg from reaching the uterus.
  • It is not a chemical barrier but a surgical procedure.