Bank statements provide customers with a ________ of their account activity during a specific time period.

The correct choice captures the essence of what a bank statement does for customers. A bank statement serves as a snapshot of account activity, providing a concise view of transactions, deposits, withdrawals, and the resulting balance over a specified period. This snapshot allows customers to quickly assess their financial activity during that time, giving them a clear sense of their spending habits and overall financial health.

While a bank statement does indeed provide a review, picture, or summary of account activity, the term "snapshot" is particularly fitting as it emphasizes the instantaneous capture of the financial state at a specific moment in time, reflecting the transactions that have occurred since the last statement. This clarity makes it easier for individuals to analyze their financial behaviors and make informed decisions moving forward.