A marketing research firm intends to ask consumers a question that reads "Do you intend to buy a automobile within the next six months?" Consumers could respond in several ways including no chance, slight possibility, fair possibility, good possibility, high possibility, and certain. Which of the following terms most accurately categorizes the type of scale that the marketing researcher will want to use in the research effort?
a. Buying ratio scale
b. Behavioral scale
c. Attitude scale
d. Purchase probability scale
e. Market-test scale
Answer: d