Which best describes the underlined words in the sentence? galileo, copernicus, and kepler were some of the early astronomers. a. complete subject b. compound subject c. simple subject

Complete subject is a subject and modifiers describing the subject.
Example:
My friend, George, is very good at math.
"My friend, George" would be a complete subject.

Compound subjects contain multiple (two or more) subjects that share a verb and are joined by a conjunction.
Example:
Apples, Bananas, and Oranges are all fruits.
"Apples, Bananas, and Oranges" would be a compound subject.

A simple subject is one subject with no modifiers and no conjunctions.
Example:
I got new headphones today.
"headphones" would be a simple subject.

"Galileo, Copernicus, and Kepler" are multiple subjects that share a verb phrase and are joined by a conjunction.
So the answer is B. compound subject.

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