Which of the following is a task in the Transaction review tab?

The Transaction Review tab in QuickBooks is specifically designed to help users manage and streamline their transactions to ensure accurate bookkeeping. One of the key tasks associated with this feature is completing missing expense categories or payees. This function allows users to identify transactions that lack proper categorization or have incomplete information regarding the payee, which is crucial for maintaining organized and accurate financial records. By addressing these gaps, users can correct discrepancies and ensure that financial reports are reflective of accurate data.

The other tasks mentioned, such as adjusting journal entries, generating financial statements, and creating customer invoices, although important, are not tasks that are performed directly within the Transaction Review tab. Adjusting journal entries typically involves more detailed accounting adjustments that are handled within different areas of the software, while generating financial statements and creating invoices are distinct functions that are not part of the transaction review process.