Answer: Why do people believe that dinosaurs existed?
Step-by-step explanation:
A scientific question or a scientific inquiry can be answered using suitable scientific methodology or by exhibiting direct observations. It is a fact finding inquiry to know about a cause of a natural event or a phenomena.
Among the options given, Why do people believe that dinosaurs existed? is the correct one because of the fact that this can be answered on the basis of evidences obtained in the form of fossils which have proved the fact that dinosaurs used to be existed on primitive earth.