Answer:
Conjoint study
Explanation:
A conjoint study is also known as Conjoint analysis, it is a form of market survey or market research that helps a business to know how people interacts with their product and services based on the product's features, functions and benefits.
Conjoint study;
i. Helps to determine the preference level of an individual.
II. It also helps to determine realistic choices of customers or shopping task.
III. Helps to evaluate the psychological factors that consumers use when evaluating different features together.