Universal Containers is using SF to manage travel requests. They would like to enable managers to approve travel requests via e-mail.
What is true regarding e-mail approval responses?

Which of the following cannot be done via a Workflow?

The organization wide default for a custom object is set to private. Thesupervisor profile grants view access to the same object. A user with the supervisorprofile is also listed as the manager on the user detail records for a subordinate.What is preventing the supervisor from viewing record owned by subordinates?(Choose 2)

What is the maximum number of master-detail lookup relationships allowable per object?

Universal Containers needs to send an Outbound Message to an external system when a record has been updated.
What is the recommended feature to meet this requirement?