List any four methods that can be adopted by human-beings for contraception. Explain in brief how the health and prosperity of a family is affected, if these methods are adopted by the husband or the wife.

Explanation

### Step-by-Step Solution:

**Step 1: List Four Methods of Contraception**
1. **Barrier Method**: This method involves the use of physical barriers to prevent sperm from reaching the egg. Common examples include condoms for males and diaphragms for females.
2. **Surgical Method**: This is a permanent form of contraception. In males, it is known as vasectomy, while in females, it is referred to as tubectomy.
3. **Intrauterine Devices (IUDs)**: These are devices inserted into the uterus to prevent pregnancy. A common type is the Copper T, which creates an environment that is not conducive to sperm survival.
4. **Oral Contraceptive Pills**: These are hormonal pills taken by females to prevent ovulation. They regulate hormones to prevent pregnancy.

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