To promote a positive service culture, customer service professionals should always ________. Question 21 options: 1) view vendors and suppliers as salespeople whose only purpose is to serve them 2) focus on taking a one-time service or sales opportunity approach instead of developing an ongoing relationship with customers 3) be well versed in the many facets of their organization and its operation, related industry topics, and the competition 4) use "they" language when dealing with customers