When a Magazine Collects Valuable Feedback on Each Issue from a Group

Multiple Choice

When a magazine collects valuable feedback on each issue from a group of readers and subscribers, which step has it taken to improve the quality of its marketing intelligence?

A) networking externally
B) training and motivating the sales force to report on new developments
C) setting up a customer advisory panel
D) motivating intermediaries to pass along important information
E) purchasing information from outside suppliers