New PMP Question & Answers with explanation

The planned announcement is a closely guarded secret, as the organization does not want the competition to attempt to steal secrets or deflect media attention the project is over budget to date. Which of the following is not a reason this could have occurred?
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The customer responsible for overseeing your project asks you to provide a written cost estimate that is 30% higher than your estimate of the project's cost. He explained that the budgeting process requires managers to estimate pessimistically to ensure enough money is allocated for projects. What is the best way to handle it
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A definitive estimate is
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Which of the following does not assess the value project management brings to an organization?
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The project manager is working on a high-profile project where completing the project within budget is critical. The project manager is new, but well-trained, and is excited to see that the project is spending less than budgeted. As a result, the project manager was planning to take a holiday when a more senior project manager warned him that he has some important work to do on the project. Why would the senior project manager give such a warning on this project
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