Which option allows combining accounts in QuickBooks Online?

Merging accounts in QuickBooks Online allows users to combine two or more accounts into one, which simplifies financial data management and reporting. This process ensures that transactions associated with the merged accounts are transferred to the primary account selected during the merger. After merging, the combined account will maintain the history of the transactions, which is crucial for accurate financial reporting.

The term "merging accounts" directly describes the specific action taken in QuickBooks Online, differentiating it from other functions such as account consolidation, which may imply a broader context beyond just combining accounts, or mass account editing, which refers to making bulk changes to multiple accounts without necessarily merging them. Therefore, the correct answer is rooted in the terminology used within the QuickBooks Online platform, highlighting the clarity and specificity of the term "merging accounts" for the described action.