What debug log category should be used?

The administrator at Cloud Kicks is troubleshooting an issue one user Is having with a flow. They have decided to add a debug log to that user.

What debug log category should be used?
A . Workflow
B . Callout
C . System
D . Database

Answer: A

Explanation:

Workflow debug log category captures information about workflow rules, flows, processes, and actions that are executed as a result of a DML operation.