Final confirmation and proof of an innovation concept normally require some form of pilot. A pilot tests the offering, process, service, or business model in a controlled but realistic setting before full-scale launch. The Project Leader must understand what kind of pilot is most appropriate for the concept and how to lead it properly. This includes defining objectives, choosing test conditions, managing stakeholders, collecting evidence, interpreting results, and deciding whether to reinforce, redirect, or stop the effort. Option A is too operational and comes later when production is being planned. Option B is too design-centered and does not address proof of the concept in a real-world setting. Option D is too broad; research may support validation, but the question is about final confirmation and proof. The correct answer is pilot / lead because pilots are the structured mechanism used to prove whether a concept can work before scaling the innovation.