Answer:
in my opinion, there should be rules set for privacy in homes between children and parents. the parents are older and have more authority over the children so maybe they will request more privacy but parents shouldn't invade children's privacy.
Explanation:
The simple subject is hours, because the simple subject of a sentence is typically only one word and is the simplest form of who is doing the verb. The complete subject would be "Twelve hours" because it includes all adjectives.