New PMP Question & Answers with explanation

The following is included within the cost baseline:
Select one
You have examined the problems and constraints experienced while conducting the project and identified inefficient and ineffective processes associated with process operations. Which tool and technique of the Manage Quality process have you used?
Select one
During a status meeting, the project sponsor made a rare appearance to address questions on project funding and asked for an update on the project’s overall progress. At one point, the sponsor asked the project manager for a copy of the schedule baseline to see what work had already been accomplished. What was wrong with the sponsor’s request?
Select one
The processes that make up the project management process groups often interact and overlap with one another and are often performed in what way?
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The project team recently participated in a working session to determine the costs associated with individual activities. To produce a more accurate estimate, they broke each activity down further into smaller chunks. What process is the team engaged in?
Select one