Question

Select all that apply. Which of the following terms can be used to identify, rename, or explain a clause or phrase in a sentence that, when removed, does not affect the meaning of the sentence?
1. interrupter
2. unnecessary
3. nonessential
4. nonrestrictive
5. nonimportant

Answer 1

The following terms apply: UNNECESSARY, NON ESSENTIAL AND NON RESTRICTIVE.
These three terms are used interchangeably to describe a particular clause or phrase in a sentence.
A clause or phrase is said to be non essential if its removal from the sentence does not affect the main idea or the meaning of the sentence. A sentence will still retains its meaning if a non essential phrase or clause is remove from it. For example, look at this sentence: Faith, who always comes first in her class, is a very intelligent girl. The non essential phrase in the sentence is 'who always comes first'. If this phrase is removed from the sentence, the sentence will still retain its original meaning and the sentence will now read like this: 'Faith is a very intelligent girl'. 

Answer 2

2, unnecessary, which is also a synonym for nonessential, and non important.