Which of the following is the earliest method used for gathering marketing information?
A) Written testimonials received from purchasers of a firm's products
B) Email surveys conducted by research professionals
C) Telephone surveys conducted to assess household preferences
D) Delphi technique

Question

Quizplus · Accepted Answer

Written testimonials have been used for centuries as a form of customer feedback and marketing information gathering, long before the advent of modern technology and methodologies such as email surveys, telephone surveys, and the Delphi technique.

Which of the Following Is the Earliest Method Used for Gathering