Final answer:
The routing number, a nine-digit figure found at the bottom left of a check, uniquely identifies the bank holding the account.
Step-by-step explanation:
The feature of a check that identifies the bank that holds the account of the check is the B) Routing number. This is a nine-digit number located at the bottom left-hand corner of the check and is unique to the bank. It helps financial institutions to process checks and electronic payments. The routing number is followed by the account number, which is specific to the account holder's personal account. On the contrary, the memo line is used for including a note or reminder about the purpose of the check, while the signature line is where the account holder signs to authorize the transaction.