Answer:
C)debit Rent Expense, $3,000; credit Prepaid Rent, $3,000.
Step-by-step explanation:
The amount $18,000 is good for 6 months. That means that the monthly rent would be $3,000 (which is 18,000/6).
On July 31, one month of this prepaid rent has been used and should be recognized as a "Rent Expense" for one month which is $3,000
The credit would be "Prepaid Rent" since the balance of $18,000 should decrease by $3,000, which is the used portion of the prepaid rent.