The earned value divided by the actual, cumulative cost of the work to date is the: Budget efficiency index. Schedule performance index. Cost performance index. Budgeted cost at completion index.

(C) Cost performance index.

Explanation:

In project management, the Earned Value is how much work has been done on the project in relation to the original project budget.

The Actual Cost on the other hand is the true cost incurred on the project till date.

The earned value divided by the actual cost is used to measure the cost performance index of the project.

The correct option is C.