Hi go to Course Hero and you will get a very nice explanation
Because I used Course Hero in You*be
And very nice explanation
The correct answer would be the first option. A collective subject is a noun (functioning as the subject) that describes a group made of many parts. For example, the words "team" which means a group of people playing. Another one is "pack" used in a pack of wolves, which means a group of wolves.
A main idea is important information that tells more about the overall idea of a paragraph or section of a text. use your browser's BACK button to return. or CLOSE browser window if this is an extra window.