The sentences that take a plural subject are
Denise and Natalie play on the same basketball team.
It can be identified since this sentence is the only that has agreement with the verb. The other three sentences do not have a plural subject because even some nouns or noun phrases are joined with and, they refer to a singular subject (America's largest city and cultural center) (Hammers and Nails) because the verb is in the singular
Anyone can be beautifal no matter who they are
There was chaos because he was the king and there was no heir to inherit the throne. So Merlin placed a spell on a sword and put the sword in a stone. The one that could pull the sword from the stone would become the next king.
He discovers how to animate lifeless matter.