You are a project manager of a complex project which involves many procurement contracts with subcontractors. During the execution phase, a subcontractor comes to you and says that he has completed his part of the work. You reviewed the facts and provided the subcontractor with a formal written notice that the contract has ended. What process is this?

(a) Validate scope

(b) Verify scope

(c) Close procurements

(d) Control procurements