That sentence is an example of parallel structure.
When there is repetition of a specific grammatical form in a sentence, parallelism or a parallel structure is produced. This occurs when you mantain the same pattern for every compared word or idea in your construction. This makes the idea easier to follow by the reader.
Is this question multiple choice or just like that? Hope I can help :)
"she" would be the pronoun.
You can rewrite this question as "She is your best friend?"
So in that case, "she" would be the subject.
In English, you just switch around "is" and the subject to make a question and make it sound Englishy
PS in Italian (and probably other languages) you would just say "She is your best friend?"
Answer:Argo, the system of television cameras and sonars that helped find the Titanic, was named by Titanic expedition leader Robert Ballard for the mythical Greek vessel that carried Jason on his quest for the Golden Fleece. In 1985, Argo represented a new generation of exploration vehicles for ocean scientists.
Explanation:
It means a thorough and dramatic change in something
