Explanation:

- When depositing money in a bank, you generally need to fill out a form to record the details of the transaction.

- Option 1: Cheque

- A cheque is a document used to instruct a bank to pay a specific amount from one person's account to another. It's generally used for withdrawal or transfer, not deposit.

- Option 2: Docket

- A docket is a document used in various contexts, sometimes as a receipt or inventory record. It's not specifically for depositing money in a bank.

- Option 3: Withdrawal Slip

- This is used to take money out of your bank account. It's the opposite of depositing.

- Option 4: Pay-in Slip

- This is the correct answer. A pay-in slip is used to deposit money or checks into a bank account. It records the details of the deposit.