Final answer:
The preferred quality index for youth bikes in Mike's Bikes is the Youth Bike Quality Index (YBQI). It assesses factors like durability, safety, comfort, and performance to help parents and young riders make informed decisions.
Step-by-step explanation:
In Mike's Bikes, the preferred quality index for youth bikes is known as the Youth Bike Quality Index (YBQI). This index assesses various factors such as durability, safety, comfort, and performance to ensure that the bikes meet the specific needs of young riders.
For example, the YBQI takes into account the strength of the frame, the quality of the brakes, the effectiveness of the suspension, and the overall weight of the bike. By considering these factors, the YBQI helps parents and young riders make informed decisions when choosing a youth bike.