Answer: Letter "e" is correct. As seen below;
Explanation:
It´s role is to insight what, in a particular product or service, makes it so attractive to impulse and maintain its consume by some group. What shapes people decision toward product/service and makes their experience interesting to probably repeat usage/consume. That is the logics behind it: so companies may sell more and conquer preference.
It is about consumer engagement and experience: not about the product or the consumers alone; it is about this revealing interaction/friction the product/service produces on its proprietor/user.
Considering the intangibility of the matter, it is not appropriate to say that utility role in economic modeling provides "objective measure", nor shows "combinations of goods" or even "identifies consumers" like aims. These are not the primary intention, but eventual subproducts. Captivating people´s reasons of enjoyment is the focus and starting point.