Which type of bank account involves the use of a passbook?

A savings account is designed for individuals to deposit money and earn interest on their savings. One of the traditional features of a savings account is the use of a passbook. The passbook serves as a physical record of deposits, withdrawals, and interest earned, allowing account holders to track their savings over time. This tangible aspect of the savings account helps users maintain an awareness of their funds, which is especially useful for personal finance management.

Checking accounts, while widely used, typically do not utilize a passbook; instead, they may offer electronic statements or online banking features for tracking transactions. Cryptocurrency accounts are entirely digital with no physical documentation like a passbook involved. Senior citizen checking accounts might have features that cater to older adults, but they generally function similarly to regular checking accounts, typically lacking the use of a passbook as well. Thus, the connection of a passbook specifically highlights the savings account as the correct answer.