Final answer:
The cost to fix risk events over the life of a project typically starts low and increases as the project progresses, ending high. Therefore the correct answer is 'A. starts low and rises, ending high'.
Step-by-step explanation:
Over the life of a typical project, the cost to fix risk events typically starts low and rises.
This phenomenon is known as the 'cost of change' or 'cost of fixing risks'—which suggests that it's cheaper and easier to address potential risks early in the project's lifecycle when changes can be made without significantly impacting what has already been built or implemented.
As the project progresses, more components or elements become finalized, making any alterations due to risk events more complex and costly. Therefore, the correct answer to the multiple-choice question is 'A. starts low and rises, ending high'. This is based on the principle that changes are more expensive to make later in the project due to the increased complexity, amount of work that might need to be redone, and the potential impact on the project's schedule.