Explanation: Net Promoter Score (NPS) is a metric that evaluates the loyalty and satisfaction of customers based on how likely they are to recommend a product or service to others. It is calculated by asking customers one question: “On a scale from 0 to 10, how likely are you to recommend this product/service to a friend or colleague?” Customers who respond with a 9 or 10 are considered promoters, customers who respond with a 7 or 8 are considered passives, and customers who respond with a 6 or lower are considered detractors. The NPS is then calculated by subtracting the percentage of detractors from the percentage of promoters. NPS can help sales reps identify their most enthusiastic and loyal customers, as well as those who are at risk of churn or dissatisfaction. NPS can also help sales reps generate referrals, testimonials, and reviews from their promoters, as well as improve their products and services based on the feedback from their detractors and passives.