What would a developer use to trigger one workflow from another?

Which types of Attributes can be added in campaign schemas? Choose the three correct answers.

Out of the following variables, which has the widest range of visibility within the platform?

An Adobe Campaign operator is included in the Workflow Supervisors Operator Group, and is required to have Administrator access for one week only. What would be the best practice to overload the operator's existing rights?

A daily campaign has sent out 0 emails to customers this week when it should be sending over 1000 emails a day. None of the activities are flashing red 10 indicate they are showing an error.
What would be a developer's first step in troubleshooting the failed workflow?