Final answer:
d) Stegosaurus
The dinosaur with vertical plates of bone down its spine is the Stegosaurus, which belonged to the Ornithischia group of 'bird-hipped' herbivorous dinosaurs.
Step-by-step explanation:
If you were a dinosaur with vertical plates of bone down your spine, you would be a Stegosaurus. The Stegosaurus is known for its distinctive row of large, vertical plates that ran along its back and the spikes on its tail.
The Stegosaurus is one of the most easily identifiable dinosaurs, thanks to its unique features. It belonged to a group of dinosaurs known as the Ornithischia, or 'bird-hipped' dinosaurs, although, contrary to what the name suggests, birds actually evolved from the saurischian 'lizard hipped' dinosaurs. The Ornithischia were herbivores and often had specialized adaptations, such as the Stegosaurus' plates and tail spikes, or the armored bodies of ankylosaurs and the horns of Triceratops.