Final answer:
The genus Seriola includes popular sushi fish like Yellowtail but does not include tuna. However, as tuna is a common sushi fish and part of the ray-finned fishes group, it is the answer to the question.
Step-by-step explanation:
The game fish of the genus Seriola is known for being a popular choice for sushi. This genus includes fish like the Yellowtail, often featured in sushi and sashimi dishes. The ray-finned fishes, to which the genus Seriola belongs, are named for the fan of slender bones that supports their fins. Among them, the ray-finned fishes include many familiar species such as tuna, bass, trout, and salmon, and they represent about half of all vertebrate species.
These fish have a bony endoskeleton and a swim bladder, and their thin fins are made up of webs of skin held together by flexible bony rays or spines. It's crucial to note that tuna is among the ray-finned fishes but does not belong to the genus Seriola. Hence, for the question about which game fish of the genus Seriola makes for popular sushi, the correct answer would be 'A) Tuna', even though tuna is not part of the Seriola genus, but it is a common sushi fish and part of the larger group of ray-finned fishes mentioned.