New PMP Question & Answers with explanation

An international project is entering its final phase. Some work in this phase must be done in the foreign country. Unsure if company policy requires a full-time employee onsite for project work in that country, which project artifact should the project scheduler reference?
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You are leading a project to design a high-efficiency solar cell. The materials that you are acquiring for this project include copper, silver, and silicon among others, and you have also ordered custom built manufacturing equipment. Additionally, you have secured permission from the landlord to install a solar array on the roof of the corporate office for testing, and reserved a conference room for daily stand-up meetings. What is the result of your efforts?
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You are leading a project team with a technology upgrade project within a project-oriented organizational structure. You were recently informed that one of your project team members falsified required certifications on their resume', and you have verified the information as accurate. You want to terminate the team member's employment. What should you do first?
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A project to construct a new subway line is underway, and the tunnel boring machine has slowed due to unexpected changes in rock composition. It has been decided to implement the planned risk response by increasing the speed of the machine to 100% of rated capacity. The team believes that the additional strain on the machine will not cause more downtime for its maintenance thus negating the benefit of faster boring. What should the project manager do first?
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A project is underway to construct a 50 story office building. With construction nearly complete, a government inspector has issued a stop order because one of the cranes failed inspection. The schedule reserves are inadequate to cover the resulting delay from the unavailability of the key resource. What should the project manager do next?
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