Which sentence has a neutral connotation?

Okay you did not give any sentences, but I will tell you what a neutral connotation is because it may help you get the answer.

Explanation:

This is when a word says what it means with a neutral point of view, and no attached positive or negative connotation. The statement, “He is ambitious” suggests a person works hard and strives to achieve, without judgment on whether the ambition is a good or a bad thing.

the universe is complete credible source of our oxygen

1- respelling: 2

2-synonym: 6

3- definition: 5

4-entry -word: 1

5-etymology: 4

6-alternate forms: 3

7-illustrative quote: 7