Part of brain acting as relay centre is ………… .

Explanation

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks for the part of the brain that functions as a relay center.

2. **Define the Relay Center:** A relay center in the brain is a structure that processes and transmits information between different parts of the brain.

3. **Locate the Thalamus:** The thalamus is the specific part of the brain that serves as a relay center. It is situated in the middle of the brain, positioned between the cerebral cortex and the midbrain.

...