Final answer:
A debit entry represents the increase in an asset or expense account, while a credit entry represents the increase in a liability, equity, or revenue account. The correct answer is D. Both a debit and a credit.
Step-by-step explanation:
In accounting, every journal entry should include both a debit and a credit. A debit entry represents the increase in an asset or expense account, while a credit entry represents the increase in a liability, equity, or revenue account.
For example, if a company purchases inventory on credit, the journal entry would include a debit to the Inventory account (increase in asset) and a credit to the Accounts Payable account (increase in liability).
Therefore, the correct answer is D. Both a debit and a credit.