Which of the following methods helps estimate the value provided by projects?

The Product Owner on a project, on which you are the Scrum Master, has identified disaster situations, such as earthquakes and tsunamis, as potential risks to the underwater transnational communication sea link. The Stakeholders have suggested that steps to safeguard the foundations of the ocean infrastructure be taken at the earliest, and also have recommended that a contingency reserve be created, which could be used in case of disaster situations. This is an example of:

You are the Scrum Master for a project in a new Scrum environment. The Development Team is confused about their responsibilities in a Sprint. Of the following which one is not part of the Development Team's responsibilities?

During a Retrospect Sprint Meeting, the Scrum team conducted an Explorer-Shopper-Vacationer-Prisoner exercise. One of the participants indicated that he feels like an Explorer. Which of the following best describes who an Explorer is?

A CEO asks the Development Team to add a new item to the Sprint. What should the Development Team do in response?