An arrangement where participants share costs proportional to their involvement.

• A. Cost Sharing
• B. Cost Allocation
• C. Expense Sharing
• D. Shared Costs

Answer: (A)

The concept being tested is distributing costs among participants in proportion to how much each is involved or benefits. When everyone contributes what they should based on their level of participation, the arrangement is called cost sharing. It ensures fairness because the amount each person pays reflects their actual involvement or benefit from the project.

Cost sharing is the best fit because it directly conveys proportional contributions tied to involvement. Cost allocation is more about systematically assigning costs to cost objects using a predefined method, which isn’t necessarily tied to each party’s level of involvement. Expense sharing is related but can be used more broadly for sharing specific expenses and doesn’t always emphasize proportional involvement. Shared costs is too vague to capture the deliberate proportional sharing aspect. For an arrangement where the shares mirror participation, cost sharing is the precise term.