A woman uses pills A to prevent pregnancy for birth control. These pills prevent the ovaries from releasing ovum into oviducts. Another woman uses a chemical B that kills the sperm and prevent pregnancy.
What is the general name of these methods of birth control?

Options

A. Chemical method
B. Barrier method
C. Surgical method
D. None of these

Answer

To answer the question about the general name of the methods of birth control used by the two women, we can break down the information provided into steps:

### Step-by-Step Solution:

1. **Identify the First Method (Pills A)**:
- The first woman uses pills A that prevent the ovaries from releasing an ovum into the oviduct. This indicates that the method is hormonal in nature, as these pills contain hormones that inhibit ovulation.

2. **Identify the Type of Birth Control for Pills A**:
- Since these pills are hormonal contraceptives, they are classified under the **chemical method** of birth control. Hormonal contraceptives work by altering the hormonal balance in a woman's body to prevent ovulation.

3. **Identify the Second Method (Chemical B)**:
- The second woman uses a chemical B that kills sperm. This method also prevents pregnancy by ensuring that sperm cannot fertilize an ovum.

4. **Identify the Type of Birth Control for Chemical B**:
- The use of a chemical that kills sperm is also a form of **chemical birth control**. This method is often referred to as a spermicide.

5. **General Name for Both Methods**:
- Both methods described (pills A and chemical B) fall under the broader category of **chemical methods of birth control**.

### Final Answer:
The general name of these methods of birth control is **chemical methods**.

---