Which statement defines a risk?

C.

Sure, I'd be happy to provide a detailed explanation for your question.

Definition of a Risk: A risk is an uncertain event or set of events that, should it or they occur, will have an effect on the achievement of project objectives. In other words, a risk is something that may happen in the future that could potentially impact the project in a negative way.

Explanation of Answer Options:

A. A certain event occurring in the future that will have a negative impact on the project's objectives This answer option correctly defines a risk. It states that a risk is an event that has not yet occurred but could potentially impact the project objectives in a negative way if it does happen.

B. An event that has already occurred that the Project Manager must deal with immediately This answer option describes an issue, not a risk. An issue is an event that has already occurred and needs to be dealt with immediately.

C. An uncertain event, or set of events that, should it or they occur, will have an effect on the achievement of objectives This answer option correctly defines a risk. It highlights the uncertainty of the event or set of events and how they could potentially impact the project objectives.

D. An uncertain event, or set of events that, should it or they occur, will be automatically escalated to the Project Board for a response. This answer option describes a contingency plan, not a risk. A contingency plan is a predefined response plan that is activated when a risk occurs.

In conclusion, answer option A and C correctly define a risk, while answer option B and D do not. A risk is an uncertain event or set of events that could potentially impact the project objectives if it does happen.