New PMP Question & Answers with explanation

The X in the DfX can be:
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There are a number of risks that have been identified in your project. The team has decided not to change the project plan to deal with the risks, but they have established a contingency reserve of money in the event something triggers these risks. This is an example of what type of risk mitigation technique?
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You are managing an oil-drilling project. With oil at $143 per barrel, this could be a highly lucrative project. However, there is a chance that the price of oil will drop below $105 per barrel, which would eliminate the profit in the project. This is an example of:
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Mary is managing an organizational transformation project. The nature of the project would require responding to high levels of change and would also require continuous stakeholder engagement. Which of the project lifecycles should be chosen for this project?
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You are working with your team and are looking at the cost risks in the project. You and your team are currently creating a tornado diagram for the project risks. You do this as a part of which of the following processes?
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