What function allows exploration of detailed transaction balances in sheets?

The function that allows users to explore detailed transaction balances in sheets is known as "Drill-into transactions." This feature is essential for financial analysts and users who need to gain deeper insights into their data. By utilizing this function, users can click on a specific value in a report or sheet and access the underlying transaction data that contributes to that figure. This capability is crucial for understanding the specifics of transaction entries, verifying data accuracy, and conducting thorough financial analysis.

The other options do not specifically focus on accessing detailed underlying transactions. Data aggregation generally refers to the process of compiling data from various sources into a summary form, which does not provide the granularity needed to see individual transactions. Transaction summarization emphasizes producing an overview or summary of transactions rather than giving access to the transaction details themselves. A balance sheet overview provides a high-level view of assets, liabilities, and equity but does not delve into the specifics of transaction-level data. Thus, "Drill-into transactions" is the most appropriate function for exploring detailed transaction balances.