New PMP Question & Answers with explanation

Which of the following processes are responsible for adjusting stakeholder engagement and communication strategies and plans, based on how the project is progressing and how the results compare to the plan.
Select one
Mandatory dependency is also known by what other name?
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You are a project manager for Wedding Planners, Inc. Since every wedding is unique, your organization believes in managing each one as a project. You’ve come up with a great idea for a new event that you’re certain customers will love and that will also profit the company. Your boss asks you to investigate alternative methods for implementing the new idea and come back with a recommendation. You discover that Alternative A could yield revenues of $21 million over the next two years, while Alternative B could yield revenues of $29 million over three years. The finance manager told you to use 5 percent as the cost of capital. Which project should you choose and why?
Select one
Which type of estimating technique can have a high level of accuracy?
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Carina is a principal project manager of You’ve Got Dogs, a specialty company that creates custom dog apparel and toys. She has just obtained approval of the project management plan and is about to publish it to the project team. What process group are the activities she is performing associated with?
Select one