Final answer:
Leesa is utilizing a Hypothetical Scenario to engage Mr. Rogers by presenting the potential outcome of increased bookstore sales, hence drawing him into a dialogue about business expansion.
Step-by-step explanation:
In the example provided, Leesa is using a Hypothetical Scenario opening. This technique draws the listener into considering a future possibility, which in this case is a 20 percent increase in bookstore sales per year. Leesa presents a situation that prompts Mr. Rogers to imagine the potential outcome of increased sales, thus engaging him with the possibility of business growth before details are even discussed.