Given below are four methods (A-D) and their modes of action (i-iv) in achieving contraception. Select their correct matching from the four options that follow
`{:(,"Method",,"Mode of Action"),("A.","Oral pill","(i)","Prevents sperms reaching cervix"),("B.","Condom","(ii)","Suppresses sperm motility"),("C.","Vasectomy","(iii)","Prevents ovulation"),("D.","Copper T","(iv)","Semen contain no sperms"):}`

Options

A. A-(iii),B-(iv),C-(i),D-(ii)
B. A-(ii),B-(iii),C-(i),D-(iv)
C. A-(iii),B-(i),C-(iv),D-(ii)
D. A-(iv),B-(i),C-(ii),D-(iii)

Answer

To solve the question of matching the contraception methods (A-D) with their respective modes of action (i-iv), we will analyze each method and its corresponding action step by step.

### Step-by-Step Solution:

1. **Identify Method A: Oral Pill**
- The oral pill is a contraceptive that contains hormones (either estrogen, progestogen, or a combination of both).
- **Mode of Action:** The primary function of the oral pill is to **prevent ovulation** by inhibiting follicle development.
- **Matching:** A matches with (iii) Prevents ovulation.

2. **Identify Method B: Condom**
- A condom is a barrier method made from thin rubber or latex that is used during sexual intercourse.
- **Mode of Action:** It prevents sperm from reaching the cervix by covering the penis or vagina.
- **Matching:** B matches with (i) Prevents sperms reaching cervix.

3. **Identify Method C: Vasectomy**
- Vasectomy is a surgical procedure that involves cutting or blocking the vas deferens, which prevents sperm from being included in the semen.
- **Mode of Action:** As a result, the semen contains no sperm.
- **Matching:** C matches with (iv) Semen contains no sperms.

4. **Identify Method D: Copper T**
- The Copper T is an intrauterine device (IUD) that is inserted into the uterus.
- **Mode of Action:** It releases copper ions that suppress sperm motility, thereby preventing fertilization.
- **Matching:** D matches with (ii) Suppresses sperm motility.

### Final Matching:
- A. Oral Pill → (iii) Prevents ovulation
- B. Condom → (i) Prevents sperms reaching cervix
- C. Vasectomy → (iv) Semen contains no sperms
- D. Copper T → (ii) Suppresses sperm motility

### Conclusion:
The correct matching is:
- A - (iii)
- B - (i)
- C - (iv)
- D - (ii)