Assertion:Association areas are neither clearly sensory nor motor in function.
Reason:Association areas are responsible for complex functions like intersensory associations, memory and communication.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Association areas are neither clearly sensory nor motor in function." This means that these areas do not fit neatly into the categories of sensory processing or motor control.

2. **Evaluating the Reason**: The reason given is that "Association areas are responsible for complex functions like intersensory associations, memory, and communication." This indicates that these areas are involved in higher-level processing that integrates information from various sensory modalities and contributes to cognitive functions.

3. **Analyzing the Relationship**: Both the assertion and the reason are correct. The assertion correctly identifies the nature of association areas, while the reason accurately describes their role in the brain. However, the reason does not directly explain why association areas are neither sensory nor motor.

4. **Conclusion**: Since both statements are correct but the reason does not provide a justification for the assertion, the correct answer to the question is **B**: Assertion is true, but the reason is false.