Final answer:
The correct entry to record the use of supplies during a period is to debit supplies expense and credit supplies, reflecting the expense incurred and the decrease in supplies on hand.
Step-by-step explanation:
The adjustment to record supplies used during the period should reflect the decrease in supplies on hand and the increase in supplies expense. The correct entry to record the use of supplies would be to debit supplies expense; credit supplies. This entry recognizes the expense associated with supplies used, as expenses are increased by debits. The supplies account is credited because the amount of supplies on hand has decreased, and asset accounts like supplies are decreased by credits.