Answer:
C. Project Initiation
Step-by-step explanation:
You typically should sort out all questions and concerns about a project to a client before the actual work on the project begins. Project Initiation is sort of pre-planning: it is pitching an idea to a client.
Risk mitigation is esentially risk management, or fixing problems after they arise.
Project planning is the beginning of the project where you map out the path you'd take to execute the idea.
Project execution is the actual work that is done to complete the project.