Identify the part which vibrates to produce sound in the instruments.
Dholak

Explanation

To identify the part that vibrates to produce sound in the instrument dholak, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Instrument**: The dholak is a traditional percussion instrument commonly used in Indian music. It has a cylindrical shape and is played with the hands.

2. **Identifying the Components**: The dholak consists of several parts, but the most important part for sound production is the membrane or drumhead.

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