Marketing Mergers agencies find out whether there is a demand for a product and what sort of demand it is. They will want to know if there are (0) to the product they are going to place; who will use it—men, women, or both; will there be only one section of men or women who will use it; would a low price (19) more customers, or would they need to add something to it to make it popular, or change its packaging—(20) it For the (21) to these and other questions they will make a survey—an examination—of the market. The survey most people are (22) with is the questionnaire, where a (23)—a specially selected group of people—are asked questions about products they use and why they buy them. But market research techniques can be more complicated than this, (24), for example, a group of people discussing a subject, say, (25) hygiene, to find out if a new toothpaste will sell. Tests may be made by giving away (26) samples of the new product, or reactions to a brand name—the name of a product—may be studied to find out whether a new product will be (27) on the market. From the information (28), the marketing company can prepare their advertising campaign—the (29) plan. There are two types of advertising—product and brand advertising. Product advertising tells people that a new invention or device is being sold. Perhaps a new design of typewriters with special (30), or a new pen that is easier to use. Brand advertising tells people there is a new name on the (31). A product, what is does, and how it is made, could be the same as (32), for example soap powder, but its name is different. In the UK there are basically (33) two detergent, or soap companies which produce hundreds of brand names for powders that are really the same product. A. enemies B. buyers C. sellers D. competitors EXAMPLE：The correct answer for blank (0) is D.

20（）