Explanation should include

laws governing or related to purchasing
ethical reasons for the use of a competitive, fair, bid-based purchasing system
reasons why a purchasing system should be open to all prospective, reputable purveyors.

Process/Skill Questions:

Thinking

Why should purchase specifications be consistently followed within a food service operation and by its suppliers?
What are the legal ramifications of involvement in price fixing, kickbacks, and embezzlement?

Communication

Leadership

Management