New PMP Question & Answers with explanation

A project manager is overseeing the execution of the team’s project activities. She closes out the day, satisfied that the team is working together harmoniously and beginning to adjust their work habits and behaviors to support one another. Which stage of the Tuckman team development ladder is the team currently in?
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Yazzy is a junior project manager for a fitness company that is developing a new franchise model. She is currently working under the guidance of a senior project manager over her parent project, who asks that she calculate the expected costs to finish the remaining project work. The work is proceeding as planned. She determines that the EAC is $75,000, and the cumulative actual costs to date are $50,000. What will Yazzy communicate to the senior project manager?
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Two project managers preparing for the PMP® exam sat and debated over the various ways that project life-cycle phases could be performed. The project managers would be covering all of the following except for which one?
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At what point in the project’s life cycle is the risk probability of occurrence at its highest?
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You have a very energetic project team. One of your team members has been classified by his teammates as brilliant. The team members are motivated by results, have good conflict-resolution skills, and are highly committed to the project, among other things. They have a solid understanding of the project goals and objectives and understand the direction the project is headed in. When their brilliant teammate questions the approach the team is using regarding one of the goals, you ask the team for their input and gather the facts before making a decision. You ask the team what they would do, and their conclusion is that the brilliant teammate is right and it’s better to go with his solution than the one they planned. What type of power is the teammate displaying, and what leadership style does the project manager possess based on this question?
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