Bonny is the business analyst for her organization and she's making a determination from which vendor the solution should be purchased. She has identified several categories to measure each vendor's overall performance and solution. cost, schedule, experience, certification, references, and years in business. For each category, she has identified scores the vendor may earn; for example, cost is worth 25 points, schedule is worth up to 20 points, and years in business is worth up to ten points. The vendor who gets the most points in the assessment will win the contract. What is Bonny using in this scenario?