What should an administrator use as an identifier when importing and updating records from a separate financial system?

Sales reps miss key fields when filling out on opportunity record through the process. Reps need to move forward Win unable to enter previous stage.
Which three options should the administrator use to address this need?
Choose Three answers

Northern Trail Outfitters has hired interns to enter Leads Into Salesforce and has requested a way to identify these new records from existing Leads.
What approach should an administrator take to meet this requirement?

The administrator at Cloud Kicks has a Custom picklist field on Lead, Which is missing on the Contact when leads are converted.
Which two items should the administrator do to make sure these values are populated?
Choose 2 answers

A sales rep has left the company and an administrator has been asked to re-assign all their accounts and opportunities to a new sales rep and keep the teams as is.
Which tool should an administrator use to accomplish this?