Juanita Petino operates a dress shop in a suburban mall. Her research budget is very small, so she utilizes low-cost or no-cost methods to gather research data. One method that works very well for her is to change the themes in her local newspaper and radio advertising and watch the result. Juanita is using ________ to gather data for marketing decisions.
A) informal surveys
B) experiments
C) guess work
D) logic-directed research
E) secondary sources
Answer: B