Answer:
The correct option is letter C) measured the speed of light in 1878.
Explanation:
A predicate consists of a verb or a verb phrase that offers information about a subject. In other words, a predicate is everything in a structure (verb, objects, complements) that is not the subject. The subject is what the sentence is about, its topic. In the sentence "Michelson measured the speed of light in 1878," Michelson is the subject, the person this sentence is about. The rest of the sentence is the complete predicate:
measured - verb
the speed of light - object
in 1878 - adverbial phrase of time
