Question

Which choice best describes the underlined word or words in each sentence?

Answer 1

Many scientists -- complete subject
scientists -- simple subject

Answer 2

Through observation, many SCIENTISTS have studied and come to understand nature.

The Capitalized word is the SIMPLE SUBJECT of the sentence.

Simple subject is the word or main word group that tells what or whom the sentence is about.

Complete subject  is composed of all the words that tells what or whom the sentence is about.

scientists - simple subject
many scientists - complete subject