A, by adding a subject and a verb.
And no, it doesn't change it into a sentence, it is still a clause.
For example:
Meanwhile, with the golden and yellow flowers growing...
See, I added a subject and a verb, but it is still a clause because what happens while the flowers are growing is still unknown.
Hope this helps baiii <3
I think it's the first sentence because a noun phrase contains is or contains the subject and Hikers is the subject.
