What is the purpose of a Debit Block?

A Debit Block is a security feature used to prevent unauthorized or unwanted debit transactions from being processed against a specified account, typically a demand deposit account. The primary purpose of this feature is to enhance account security by ensuring that only specified companies or merchants are allowed to initiate debit transactions.

When a Debit Block is in place, it restricts all debit activity unless the transactions have been pre-approved or fall within certain criteria established by the account holder. This helps users maintain better control over their account activity and prevent accidental overdrafts or fraudulent transactions.

The other possible choices do not correctly represent the function of a Debit Block. Increasing the account balance or allowing unlimited withdrawals does not align with the aim of managing and securing funds within the account. Similarly, calculating interest on deposit accounts is unrelated to the operational security that a Debit Block provides. Overall, the purpose of the Debit Block is crucial for account holders seeking to safeguard their finances against unauthorized access.