If you own a small retail shop and you put ads in the local paper, put flyers on doors in every neighborhood, and buy billboards in the area so that you can reach as many potential consumers as possible, you are engaging in marketing.
a. mass
b. niche
c. segmented
d. targeted
e. specific

The correct option is A

Explanation:

Mass marketing is the kind of market approach, in which the business or the firm decides to ignore or disregard the differences in the market segment  and reconsider the full market with the one approach or the strategy, that supports the broadcasting idea, so that it will reach to the huge number of people.

This kind of marketing is the one which is a point of convergence on the newspapers, radio and television as the media used to approach the audience. So, it is engaging or involving in the mass marketing.