It would be a. "We the people of the United States ... do ordain and establish this Constitution for the United States of America."
We can rule out c immediately, because it has dependent clauses standing on its own. B. can also be ruled out, because the clause in-between the hyphen does not read correctly. A. is correct grammatically, but D. is also grammatically correct and it explains it in a quick and understandable way.
<span>Since the pronoun comes after the predicate, I think "she" being used as a predicate nominative. So the answer is A:)</span>
The nurse is the comic relief in the play of Romeo and Juliet
Answer: lack of sleep
Explanation: we could go to sleep at a more decent time or turn our phones at night