Final answer:
An accounts receivable balance increases with a debit entry, as this type of account is considered an asset and debits are used to increase assets within the double-entry accounting system.
Step-by-step explanation:
An accounts receivable balance will increase with a debit entry because accounts receivable represent an asset, and in accounting, debits increase assets. This is grounded in the fundamental principle of double-entry bookkeeping where assets are on the left side (debit side) of a T-account and the liabilities and equity are on the right side (credit side). Any time a company sells goods or services on credit, it creates an accounts receivable, which means the customer owes the company money. Recording this transaction requires a debit to increase the accounts receivable balance, reflecting the expectation of future cash receipt.
Hence, the correct answer to the student's question is a) Debit; Because accounts receivable represent an asset, and debits increase assets.