Why The project management plan must be updated?

Project management plan must be update

When you established the change control board for your avionics project, you established specific procedures to govern its operation. The procedures require all approved changes to baselines to be reflected in the— 

a. Performance measurement baseline 
b. Change management plan 
c. Quality assurance plan 
d. Project management plan

Answer: d. Project management plan 

Why?

The project management plan must be updated  changes to subsidary plans and baselines subject  to formal change control processes. Those changes  must be communicated to appropriate stakeholders  in a timely manner. [Monitoring and Controlling]