One of the following is not a method of contraception- which one

Options

A. Pills having oxytocin and vaspressin
B. Lippe's loop
C. Tubectomy
D. Condoms

Answer

To determine which of the following options is not a method of contraception, we will analyze each option provided:

1. **Pills having Oxytocin and Vasopressin**:
- Oxytocin and vasopressin are hormones that are not typically used as contraceptives. While there are contraceptive pills that prevent ovulation, those usually contain hormones like estrogen and progestin. Therefore, this option is likely not a method of contraception.

2. **Lipid Loop**:
- The term "lipid loop" seems to refer to an intrauterine device (IUD). IUDs are indeed a method of contraception as they prevent implantation of a fertilized egg in the uterus.

3. **Tubectomy**:
- Tubectomy is a surgical method of contraception where a small segment of the fallopian tubes is cut or blocked to prevent pregnancy. This is a recognized method of permanent contraception.

4. **Condom**:
- Condoms are a barrier method of contraception that prevent sperm from reaching the egg. They are widely used and recognized as an effective method of contraception.

Based on this analysis, the option that is not a method of contraception is:

**Correct Answer: A) Pills having Oxytocin and Vasopressin**

### Step-by-Step Solution:
1. **Identify the options provided**: Read through the options carefully.
2. **Analyze each option**: Determine whether each option is a recognized method of contraception.
3. **Evaluate the first option**: Understand that pills containing oxytocin and vasopressin are not standard contraceptive methods.
4. **Confirm the other options**: Recognize that the lipid loop (IUD), tubectomy, and condoms are all valid contraceptive methods.
5. **Conclude**: Identify option A as the correct answer since it is not a method of contraception.