Final answer:
Sean Thompson is engaged in the prospecting step of the personal selling process, where he is identifying potential new customers by using the yellow pages online to find motorcycle stores not currently served.
Step-by-step explanation:
Sean Thompson is involved in the prospecting step of the personal selling process. Prospecting involves identifying potential new customers who may have a need for the product or service offered. In Sean's case, he is accessing the yellow pages online to create a list of potential new retail customers by looking for motorcycle stores in the 48 contiguous states that are not currently his customers. This step is essential as expanding the customer base, which aligns with his sales objective to increase sales dollars by 15% in the coming year.