In which one of the following sentences is the simple subject also the complete subject?

a. Crocodiles, quiet as logs, lurked on the riverbank. B. Large and small dinosaurs stalked the grassy plains. C. Cory drove to Middleton in his search for Eloise. D. Detectives Homer Fry and Janine Small looked high and low for clues.

The simple subject is the main word of the subject, without any adjectives or modifications, one that would be enough to form a correct sentence; and the complete subject is one with all the adjectives and modifiers.

For example: B:

Dinosaurs: simple subject

Large and small dinosaurs: complete subject.

In option C the simple subject is the complete subject: "Cory"