Which process ensures focus on the delivery of a stage's products and avoids uncontrolled change?

Which is the purpose of the Change theme?

Which of the following statements about customer's quality expectations and acceptance criteria are true?
1. Customer's quality expectations form a specific and precise list of measurable criteria that a project product should meet in order to be acceptable to key stakeholders.
2. Acceptance criteria are often expressed in broad terms as a means to gain common understanding of general quality requirements.

Which approach must be followed as a minimum requirement for applying the plans theme?

How many roles make up the Project Board?