What i dont get it explain
Well saying dunno is an error in formal/academic writing. In academic writing you would have to write, i do not know, though.
Answer:
Id say it contains at least three clauses:two independent and one independent.
Explanation:
Compound complex sentences
Constructing Compound-Complex Sentences
A compound-complex sentence is comprised of at least two independent clauses and one or more dependent clauses. Example: Though Mitchell prefers watching romantic films, he rented the latest spy thriller, and he enjoyed it very much.
I believe that the correct answer is C because that literally shows it, but it also could be A because that is a more accurate detail that she actually missed it, and that it wasn't just a random bus. But, I think it is most likely A because C is just imagery. Hope this clarified it a little bit!