Which of the following KPIs measures customer advocacy?

Customer advocacy is about a customer’s willingness to recommend your product/service to others. Net Promoter Score (NPS) is specifically designed to measure this recommendation intent, making it the most direct advocacy KPI among the options. “Complaints (#)” is typically a service quality/problem indicator; fewer complaints may correlate with higher advocacy but complaints are not an advocacy measure—they capture negative feedback volume, often influenced by customer base size and reporting behavior. “Cross-sell (%)” reflects customer expansion behavior and may indicate loyalty or product fit, but it is not the same as advocacy; customers can buy more without actively recommending. Therefore “All the answers” is incorrect because only one option is explicitly an advocacy metric. In KPI selection, context matters: NPS works best when survey design is consistent (sampling, timing, channel), and it should be paired with diagnostic measures (reasons for score, key drivers like resolution time and quality). A frequent pitfall is treating NPS as the only “customer metric”; it’s more actionable when combined with operational drivers and segmented analysis.