Answer:
You can’t prove that something is impossible—all you know is that [it] hasn’t been done yet.
Oh puedes buscar tus respuestas en otro lado
is this for a book and if so what book?
The correct answer of the given question above would be option C. The sentence that is inverted with the subject underlined is: There was a big group here last night. (Group is underlined.) The subject of this sentence is the word "group".
