Explanation
By the time you arrive at the juncture where you would close the change request, the approval has already occurred, and the Post-Implementation Review (task) has also transpired.
All that's left are:
"Close Code",
"Close Notes"
CAB Approval - TRICK ANSWER. It's
already been approved by the time
you go to close the change
Close Code - These occur at time of
CR close.
Close Notes - These occur at time of
CR close.
TRICK ANSWER. This is a task that's
already been dealt with.

Explanation
It is recommended to reuse the same workflow as much as possible for catalog items that have similar approval process. Maintaining a lot of workflows can be difficult.

Explanation
Users with itil role cannot resolve problems.