Select the option in which the part of brain is not correctly matched with its function ?

Options

A. Association area - Responsible for complex functions like intersensory association, memory and communication
B. Thalamus - Acts as relay centre of brain and co-ordinates sensory and motor signalling
C. Hippocampus - Transformation of short term memory into long term memory
D. Limbic system - Regulates sexual behaviour, emotions and motivation alone, without any help of other part of brain.

Answer

To solve the question of which part of the brain is not correctly matched with its function, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Parts of the Brain and Their Functions**:
- **Association Area**: This area lies between the motor and sensory areas of the cerebrum. It is responsible for complex functions like inter-sensory association, memory, and communication.
- **Thalamus**: Known as the relay center of the brain, the thalamus coordinates sensory and motor signaling. It is correctly matched with its function.
- **Hippocampus**: This part of the brain is involved in the transformation of short-term memory into long-term memory. It is also correctly matched with its function.
- **Limbic System**: The limbic system is involved in regulating emotions, sexual behavior, and motivation. However, the statement claims it does this "alone without the help of any other part of the brain," which is incorrect.

2. **Evaluate Each Option**:
- The first three options (Association Area, Thalamus, and Hippocampus) are correctly matched with their functions.
- The fourth option (Limbic System) is incorrectly matched because it does not function in isolation; it works in conjunction with other parts of the brain, particularly the hypothalamus, to regulate emotions.

3. **Conclusion**:
- Based on the analysis, the part of the brain that is not correctly matched with its function is the **Limbic System**. Therefore, the correct answer is option number 4.

### Final Answer:
The part of the brain that is not correctly matched with its function is the **Limbic System** (Option 4).