Description, impact assessment, probability and countermeasures are usually recorded for which of the following?

There is a requirement for an employee to enter time worked details into a computerised project reporting system. If this requirement was drawn on a use case diagram, which of the following would be correct?

A requirement has been identified as beneficial. It will be included in the system if it does not take too long to deliver or cost too much.
How would this requirement be prioritized in the MoSCoW classification?

Which of the following models might include the documentation of scenarios?

A stakeholder has been classified as 'some' on both the power/influence and interest axes of a power/interest grid.
Which of the following would be an appropriate way of managing this stakeholder?