Answer:
B. Product customization
Explanation:
Product customization, also known as product personalization the the process or method whereby producers produces customized goods and services to customers as per the customer's need and desires. In some cases, customers meet the producers to personalize products for them on how they want it to be.
It helps in finding and supplying customers what they want. The serious rider in this case is already accustomed to a specific type of bike. The producer differentiated by customization.