New PMP Question & Answers with explanation

You are the project manager for Commodities, Inc. You are involved in a new project to create an internal website for the employees that will allow them to view events within the company. All of the following options listed are project constraints except:
Select one
The two key processes that happen early in the project lifecycle are:
Select one
A first-time project manager is trying to understand the difference between configuration control and change control. The difference is:
Select one
To create a quality product, the project management team invested in training the project team members and purchasing high-end equipment. Such costs are:
Select one
The project sponsor asks you to increase budget estimates by 25 percent to ensure that the project has enough funds budgeted. What should you do?
Select one