New PMP Question & Answers with explanation

You are a project manager for Waterways Houseboats, Inc. You've been asked to perform a cost–benefit analysis for two proposed projects. Project A costs $2.4 million, with potential benefits of $12 million and future operating costs of $3 million. Project B costs $2.8 million, with potential benefits of $14 million and future operating costs of $2 million. Which project should you recommend?
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You have just prepared an RFP for release. Your project involves a substantial amount of contract work detailed in the RFP. Your favorite vendor drops by and offers to give you and your spouse the use of their company condo for your upcoming vacation. It's located in a beautiful resort community that happens to be one of your favorite places to go for a getaway. What is the most appropriate response?
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You need to convey some very complex, detailed information to the project stakeholders. What is the best method for communicating this kind of information?
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You are the project manager for Xylophone Phonics. It produces children's software programs that teach basic reading and math skills. You are performing the Plan Quality Management process and are identifying operational definitions. Which of the following does this describe?
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Your team is developing the risk management plan. Which tool and technique of this process is used to develop risk cost elements and schedule activities that will be included in the project budget and schedule?
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