The definitive terms of a contract are written during which of the following contract phases?

During the execution of a project the project manager notices that only one team member has one of the technical skills needed to build the product The project manager is afraid this might have a future impact on the quality and schedule because most of the upcoming activities will require at least three people with this specific skill.
What two actions should the project manager take to prevent the team from being unqualified? (Choose two)

During the execution of a project, a key stakeholder complains to the project manager about recent communications.
The key stakeholder explains that the relevant information from the project team was incomplete and late. As a result, the key stakeholder is beginning to disengage from the project.
What should the project manager do?

Which is a tool or technique used in scope definition?

A project sponsor asks to terminate a software installation project that is 80 percent complete. What should the project manager do first?