Answer:
The answer is: D) A good-quality radio particular to that brand of automobile
Step-by-step explanation:
An order winner is a product´s characteristic that will make a client decide to purchase the product. Order qualifiers are products´ characteristics that makes the product be considered as a purchase option by customers. Order qualifiers are like minimum market standards that products must meet to be able to compete in that market.
In this question the only characteristic unique to the car manufacturer was the good quality radio (order winner). All the other characteristics were similar between brands or car designs.