Personal selling involves a two-way communication between a buyer and seller, often face-to-face, to influence a purchase decision. The personal selling process consists of six stages: prospecting, preapproach, approach, presentation, close, and follow-up. Adaptive selling adjusts the presentation to fit the situation, such as when to offer solutions or ask questions. Consultative selling focuses on problem identification, with the salesperson serving as an expert on problem recognition and resolution.