First of all, if you don't feel comfortable telling them, then tell them that it's a personal question.
D. Confirmable because they are scientific theory’s and also very famous ones
Answer:
Conspicuous consumption
Explanation:
Conspicuous consumption is a term used to describe expenditures on goods and services purchased primarily for the purpose of showing wealth. In the mind of the conspicuous consumer, such display serves as a means of having or maintaining social status before a social group, which socially determines objects and goods, such as a classification of higher or lower status. An example of this can be seen in the question above, where the girl bought a very expensive purse just to show that she possessed something luxurious and give an impression of wealth.
Aspects of a study conducted of cars in a certain country will be to determine the general traits of consumer buying and motorists. This could include: whether a car runs on diesel or electricity to gain information for a survey on pollution of motor vehicles; also, size of a car, the frequency of use, the purpose of use, how old a car is and how many passengers are generally seated in the car. All of these factors can be used to glean invaluable information for the automotive industry, as well as for scientific studies and governments.