Which best describes the underlined words in the sentence?

A group of stars is a constellation.
--------------
A.
simple subject

B.
complete subject

C.
compound subject

Question

Which best describes the underlined words in the sentence? 

A group of stars is a constellation.
-------------- 
 A.
simple subject
 
 B.
complete subject
 
 C.
compound subject

anonymous · Answer

Since it is not one subject, and it is not two subjects ..what else is left? 
Think about is ..think about "What" is a constellation?

anonymous · Answer

simple subject

anonymous · Answer

No, think about it like this ..I'll give you an example of a simple subject.
"Many Immigrants arrived at the park". Who arrived at the park?

anonymous · Answer

RACIST