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. `1-(c), 2-(d), 3-(a), 4-(b)`
B. `1-(b), 2-(c), 3-(a), 4-(d)`
C. `1-(c), 2-(a), 3-(d), 4-(b)`
D. `1-(d), 2-(a), 3-(b), 4-(c)`

Answer

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

### Step-by-Step Solution:

1. **Identify the Function of Each Method:**
- **A. Oral Pill:** The oral pill is a hormonal contraceptive that primarily works by preventing ovulation. It releases hormones that inhibit the release of eggs from the ovaries.
- **B. Condom:** A condom is a barrier method that prevents sperm from reaching the cervix. It acts as a physical barrier during intercourse.
- **C. Vasectomy:** Vasectomy is a surgical procedure that involves cutting the vas deferens, preventing sperm from being included in the semen. Thus, the semen contains no sperm.
- **D. Copper T:** Copper T is an intrauterine device (IUD) that releases copper ions, which suppress sperm motility, preventing sperm from fertilizing an egg.

2. **Match Each Method with Its Mode of Action:**
- **A. Oral Pill** matches with **(iii) Prevents ovulation.**
- **B. Condom** matches with **(i) Prevents sperms reaching cervix.**
- **C. Vasectomy** matches with **(iv) Semen contains no sperms.**
- **D. Copper T** matches with **(ii) Suppresses sperm motility.**

3. **Summarize the Matches:**
- A - (iii)
- B - (i)
- C - (iv)
- D - (ii)

4. **Choose the Correct Option:**
Based on the matches:
- 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

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