Why is it necessary to use advertisements for various products?

(i) Advertisements plays an important role in the sale of merchandise. It is one of the ways to create new consumers.
(ii) Advertisements make products appear desirable.
(iii) These try to shape the minds of people and create new needs.
(iv) Fromthebeginningofindustrialageadvertisements have played a part in expanding markets for products and in shaping new consumer culture.