Salesforce Exam B2C Solution Architect Topic 7 Question 45 Discussion

Northern Trail Outfitters (NTO) exported all the Account records from Salesforce and used a data transformation tool to clean up values in the phone field using a standardized format. The export file has more than 2 million records. During previous data loads for similar updates on the Account object, NTO did not experience any issues with row lock.

Which feature of Data Loader should be used to load this data back into Salesforce faster?