Which of the following would be used to cover the cost of an identified risk?

Management reserve is typically allocated for unknown-unknown risks (unidentified risks) and is controlled by management, not for covering costs of already 'identified' risks.

The budget baseline is the approved version of the project budget, including reserves, but it's the overall spending plan, not a specific fund used to cover risk costs directly.

A contingency fund (or contingency reserve) is a provision in the project budget specifically set aside to address known-unknown risks, meaning risks that have been identified and planned for, but whose occurrence or impact is uncertain. This fund covers the financial implications should these identified risks materialize.

Earned value is a project performance measurement technique used to track progress against the budget and schedule, not a fund for covering risk costs.