Watch Was a Teen Publication Given Out Free to High

Watch was a teen publication given out free to high school students, but the publication was unable to deliver the response rates to coupons or sample offers that its advertisers expected. Marketing researchers for its publisher developed a research plan, gathered information from teen focus groups, analyzed the findings, and recommended replacing Watch magazine with Fuel for boys and Verve for girls. Making this change would be considered which step in the marketing research approach?

A) define the problem
B) develop the research plan
C) collect relevant information
D) take marketing actions
E) develop findings