Final answer:
Dinosaurs had the B) CD (cruratarsal diarthrodial) type of ankle. Cuboidal bones found in the wrist and ankle are cube-shaped. Bipedal dinosaurs had long tails to balance long necks, and the Archaeopteryx is an early example of a bird or feathered dinosaur.
Step-by-step explanation:
The student asked about the type of ankle that dinosaurs possessed. Dinosaurs had the CD (cruratarsal diarthrodial) type of ankle. Regarding the seven-boned ankle (tarsus) question, cuboidal bones refer to the shape of certain bones found in the wrist and ankle. Cuboidal bones are approximately cube-shaped and provide stability while also allowing for some degree of movement. Certain types of dinosaurs, such as bipedal ones, had long tails to likely help balance their long necks. This balance would have been crucial for locomotion and stability while walking on two legs. The presence of a long tail counterbalanced the weight of the front part of the body. In the context of birds or feathered dinosaurs, the Archaeopteryx is a well-known example that bridges the gap between non-avian dinosaurs and birds. The Archaeopteryx is considered one of the earliest and most primitive known birds.