Harry Howard, a successful real estate broker, has established his own real estate company in western Pennsylvania. He has on-the-job experience working at a real estate company where he had a whole staff supporting brokers' work. Now on his own, with two secretaries, Harry is building his dream of owning and growing his own business. He wants to mainly focus on middle-to-upper-income homeowners and is exploring what type of promotional material he needs to have. Which of the following would be the fastest way for Harry to build his client base?
A. Word-of-mouth
B. Full-scale advertising
C. Personal selling
D. Sales promotion

In the given situation, the most adequate promotional strategy for Harry to grow the popularity of his business would be 'word-of-mouth.'
This will allow more and more people to know about his work from one to another when they will discuss Harry's real estate work with their known ones, friends, and relatives.
This strategy is highly effective as the majority of the population trust the recommendations of their friends or relatives and they prefer the suggested ones over the new ones. Thus, Harry's business will expand the dimension of its target audience.

Hence, option A is the correct answer.

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