Who MUST know when a risk event occurs so that a response can be implemented?

At a project meeting, a business analyst requires input from a marketing consultant to continue working on a task. The business analyst has tried to contact the consultant but has been told that the consultant does not have the time to discuss the project.
What should the project manager do to move the project forward?

The document that describes the project's scope baseline is:

A project manager recently involved with constructing a hospital in country A is now managing the construction of an identical hospital in country
B. Due to the projects' similarities, a team member proposes adapting the lessons learned from country A's project, and proceeding without updating the lessons learned during construction in country B.
What should the project manager do?

What is the risk rating if the probability of occurrence is 0.30 and the impact if it does occur is moderate (0.20)?