Jaime Gonzalez owns a small publishing company in Utah and h…

Jaime Gonzalez owns a small publishing company in Utah and has a very restrictive budget for the market research he currently needs to conduct. He requires a large sample size for his research in order to arrive at insightful conclusions. Additionally, he wants to have excellent control over his sample. Keeping in mind his restrictive budget and other specifications, which of the following methods of contact would you advise Jaime to use?