Acquired immunity is also called
(A) Adaptive immunity
(B) Specific immunity
(C) Nonspecific immunity
(D) Both A and B

Options

A. Adaptive immunity
B. Specific immunity
C. Nonspecific immunity
D. Both A and B

Answer

To solve the question "Acquired immunity is also called", we will analyze each option provided and determine the correct answer.

### Step-by-Step Solution:

1. **Understand Acquired Immunity**:
- Acquired immunity refers to the immunity that an individual develops over time as a result of exposure to specific pathogens. This type of immunity is not present at birth but is developed through life experiences.

2. **Analyze the Options**:
- **Option (A) Adaptive immunity**: This term is often used interchangeably with acquired immunity. It refers to the immune response that is tailored to specific pathogens.
- **Option (B) Specific immunity**: This also describes acquired immunity as it is directed against specific pathogens, making it distinct from general immune responses.
- **Option (C) Nonspecific immunity**: This type of immunity is present from birth and provides a general defense against pathogens, which does not fit the definition of acquired immunity.
- **Option (D) Both A and B**: This suggests that acquired immunity can be referred to as both adaptive and specific immunity.

3. **Determine the Correct Answer**:
- Since acquired immunity is indeed known as both adaptive immunity and specific immunity, the best choice is **Option (D) Both A and B**.

### Final Answer:
**(D) Both A and B**

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