Answer:
Step-by-step explanation:
B. It is unlikely that Duncan will prevail because the trademark has become generic and is no longer protected as a trademark of Duncan's.
When a trademark becomes generic and loses its distinctiveness, it can no longer be protected. In this scenario, the term "yo-yo" had become widely used by the public to refer to all stringed, spinning discs, regardless of the manufacturer. This demonstrates that the term has become generic and is no longer associated exclusively with Duncan's product. Therefore, it would be difficult for Duncan to successfully argue trademark infringement against Spinning Toy Corporation.