From your small office you must watch the security cameras carefully. You have a very limited amount of electricity that you're allowed to use per night . That means when you run out of power for the night- no more security doors and no more lights. If something isn't right- namely if Freddybear or his friends aren't in their proper places, you must find them on the monitors and protect yourself if needed.
Your answer would be B. Smoothly
A. Predicate Nominative - noun or pronoun after a linking verb. It can stand in place of the noun.
Star can stand in place for Betty White