1 What is the role of the buying center at Trek? Who is likely to comprise the buying center in the decision to select a new supplier at Trek? 2. What selection criteria does Trek utilize when it selects a new supplier or evaluates an existing supplier? 3. How has Trek's interest in the environmental impact of its business influenced its organizational buying process? 4. Provide an example of each of the three buying situations- straight rebuy, modified rebuy, and new buy-_at Trek. acer