What is the primary evidence that dinosaurs existed in the past?
a. bones
b. imprints of plants
c. lizards that live today
d. there is no evidence

The correct answer is (a) Bones.

The primary evidence of the existence of dinosaurs can be seen by the bones (fossils) that were found by scientists. Most of the fossils were found in badlands and deserts of China, North America and Argentina. By the studies of those fossils, more than thousands of dinosaur species are identified.

c is the correct answer hope this !