How should an administrator ensure article managers use specified values tor custom article fields?

Universal Containers wants to allow community visitors to submit support cases without logging into the community.
Which two features are required to implement this request?
Choose 2 answers.

What would you check to see whether a workflow failed?

A sales manager cannot vim a contact owned by a salesperson. The salesperson is below the sales manager in the role hierarchy.
Why is the sales manager unable to view the contact?

Which two results can be expected it an administrator uses Data Loader to transfer ownership of account records? Choose 2 Answers.