Correct answer should be B! Purpose of risk theme is to identify , assess, and control uncertainty, and as a result, improve the ability of the project to succeed.

Uncertainties relate more to the concept of risk than problem. Therefore the correct answer should be D.

The purpose of the Risk theme in project management is to identify, assess, and control risks that may affect the project's objectives. A risk is an uncertain event or condition that, if it occurs, can have a positive or negative effect on the project. The Risk theme provides a systematic and proactive approach to risk management to ensure that risks are identified and managed before they become issues.

The text clearly states; the purpose of the risk theme is to identify, asses and control uncertainty and, as a result, improve the ability of the project to succeed. The answer should be B