Answer:
(d) is often used in marketing surveys.
Explanation:
A likert scale is a psychometric scale that is usually used in research using questionnaires. It is a 5 or 7 point scale that allows individuals indicate how they agree or disagree with something. For example
1- Strangely disagree
2- Disagree
3- Neutral
4- Agree
5- Strongly agree
The likert scale is often used in marketing surveys to get people's opinion on a subject matter with a view of improvement.
Let's say there is a customer survey that asks how satisfied a customer is, feedback from likert scale is used to improve on the service rendered by the company.