Identify the missing words in the following sentence.
A problem/concern, a request for change and [ ? ] are the three types of issue.

Which is part of quality control?

Which provides a single source of reference that may be used by people joining a project after it has been initiated so they can quickly and easily find out how the project is being managed?

Which process ensures that key roles and responsibilities are allocated before a decision is made to initiate a project?

Which is a purpose of an End Project Report?