You are the project manager of the NHQ Project and are trying to determine which seller you should choose for the project. You have received proposals from six vendors and they are all very good proposal, qualified to complete the project work, and the prices are close to the same. You would like to create method of ranking each vendor based and assign a score value to several different categories. Because the project is a high-profile project, you have assigned 25 points to experience and 10 points for all of the other categories to judge the vendors. This is considered what type of source selection process?