Which of these is used to control human population?

Options

A. Etrogen+Progesterone
B. IUCD+MTP
C. Tubectomy and vasectomy
D. all of these

Answer

### Step-by-Step Solution:

1. **Understanding Population Control**: Population control refers to the methods and strategies used to regulate the number of individuals in a population. This is particularly important in human populations to ensure sustainable living conditions and resources.

2. **Identifying Methods of Population Control**: There are various methods used to control human population growth. These methods can be categorized into several types:
- **Contraceptive Pills**: These are hormonal pills taken by women to prevent ovulation. An example is the combined oral contraceptive pill that contains estrogen and progesterone.
- **Intrauterine Devices (IUDs)**: These are devices inserted into the uterus to prevent pregnancy. They can be hormonal or copper-based.
- **Hormonal Injections**: These are injections that release hormones to prevent ovulation and are administered at regular intervals.
- **Sterilization Methods**: These are permanent methods of contraception.
- **Vasectomy**: A surgical procedure for males where the vas deferens is cut and sealed to prevent sperm from entering the semen.
- **Tubectomy**: A surgical procedure for females where the fallopian tubes are cut and sealed to prevent eggs from reaching the uterus.

3. **Conclusion**: All of the mentioned methods (oral pills, IUDs, hormonal injections, vasectomy, and tubectomy) are effective ways to control human population growth. They provide individuals and couples with the ability to plan and space their children, ultimately contributing to population control.