Final answer:
Rent Expense is the account not considered a permanent account because it is a temporary account closed at the end of the accounting period, unlike the other options which are permanent accounts.
Step-by-step explanation:
The account that is not considered a "permanent" account among the options listed is c) Rent Expense. Permanent accounts, also known as real accounts, include assets, liabilities, and equity accounts, which are not closed at the end of the accounting period and their balances are carried forward to the next period. Accounts such as Accounts Payable, Inventory, and Common Shares are examples of permanent accounts as they represent ongoing financial activities and the financial position of the company. On the other hand, Rent Expense is a temporary account, which means it is closed at the end of the accounting period, and its balance is transferred to the income summary and then to retained earnings, starting the new period with a zero balance.