InItroduction of attenuated pathogens in human body results in______________.

Options

A. Artificial acquired active immunity
B. Artificial acquired passive immunity
C. Natural acquired active immunity
D. Nature acquired passieve immunity

Answer

To solve the question, "Introduction of attenuated pathogens in human body results in______________," we will analyze the options related to immunity and understand the concept of attenuated pathogens.

### Step-by-Step Solution:

1. **Understanding Attenuated Pathogens**:
- Attenuated pathogens are weakened forms of the pathogen that have lost their ability to cause disease but can still provoke an immune response. This is often used in vaccines.

**Hint**: Remember that "attenuated" means weakened, and these pathogens can still stimulate the immune system.

2. **Types of Immunity**:
- There are two main types of immunity: active and passive. Active immunity occurs when the body produces its own antibodies in response to a pathogen, while passive immunity involves the transfer of antibodies from another source.

**Hint**: Differentiate between active (body makes antibodies) and passive (antibodies are given) immunity.

3. **Artificial vs. Natural Immunity**:
- Immunity can be acquired naturally (through infection) or artificially (through vaccination). Artificially acquired active immunity occurs when a person is exposed to a vaccine containing attenuated pathogens.

**Hint**: Focus on the terms "artificial" and "active" when considering how immunity is acquired.

4. **Analyzing the Options**:
- **Artificially Acquired Active Immunity**: This is the correct answer. It refers to the immunity gained through the introduction of a vaccine containing attenuated pathogens, prompting the immune system to respond.
- **Artificially Acquired Passive Immunity**: Incorrect, as this involves direct transfer of antibodies, not the introduction of pathogens.
- **Naturally Acquired Active Immunity**: Incorrect, as this involves natural exposure to pathogens, not attenuated ones.
- **Naturally Acquired Passive Immunity**: Incorrect, as this refers to antibodies passed from mother to child, not through vaccination.

**Hint**: Evaluate each option based on whether it involves the introduction of pathogens and whether the immunity is active or passive.

5. **Conclusion**:
- The introduction of attenuated pathogens in the human body results in **artificially acquired active immunity**. This is because the immune system is stimulated to produce its own antibodies in response to the weakened pathogens introduced through vaccination.

**Final Answer**: Introduction of attenuated pathogens in human body results in **artificially acquired active immunity**.