[Solved] What is the model of sexual response developed by David Reed which blends Masters and Johnson's and Kaplan's model into one that is described by four separate phases? A) Four Phase Sexual Response B) Sensory Erotic Profile C) Sexual Arousal Cycle D) Erotic Stimulus Pathway SPIN Approach: stands for Situation, Problem, Implication, and Need-Payoff, a consultative selling technique that focuses on asking the right questions to understand and address customer needs effectively. SPIN Approach: A sales technique that focuses on asking questions about Situation, Problem, Implication, and Need-payoff to close deals. Third Category: In a classification system, the additional or alternative group that items, ideas, or solutions can be placed into beyond the primary two options. Need-Payoff Question: A Need-Payoff Question is a sales technique that encourages prospective customers to consider the benefits and value of a product or service, focusing on solving specific needs.