Answer:
a. To increase Prepaid Rent ⇒ DEBIT, since this is an asset account, in order to increase it you must debit it.
b. To decrease Prepaid Parking ⇒ CREDIT, since this is an asset account, in order to decrease it you must credit it.
c. To increase Repairs Expense ⇒ DEBIT, since this is an expense account, in order to increase it you must debit it.
d. To increase Commission Revenue ⇒ CREDIT, since this is a revenue account, in order to increase it you must credit it.
e. To decrease Rent Payable ⇒ DEBIT, since this is a liability account, in order to decrease it you must debit it.
f. To decrease Supplies ⇒ CREDIT, since this is an asset account, in order to decrease it you must credit it.
g. To increase Unearned Revenue ⇒ CREDIT, since this is a liability account, in order to increase it you must credit it.
h. To decrease Equipment ⇒ DEBIT, since this is an asset account, in order to increase it you must debit it.
i. To increase Retained Earnings ⇒ CREDIT, since this is an equity account, in order to increase it you must credit it.
j. To increase Store Supplies ⇒ DEBIT, since this is an asset account, in order to increase it you must debit it.