The sentence featuring a restrictive clause is A. They chose to meet where the band was performing.
A restrictive clause, also referred to as an essential clause, is crucial for the meaning of the sentence and is therefore not separated by commas.
I won't write a lengthy essay, but I will say that a utopia often appears perfect superficially, yet beneath the surface, it is flawed. Numerous films like The Hunger Games and Divergent depict this. Key features of a utopia often include minimal crime, absence of poverty, and equal treatment for all individuals. Each feature could be elaborated upon briefly in separate paragraphs. It's also crucial to recognize that utopias frequently conceal negligence to maintain the flawless image their creators promote.
Confrontations push the plot forward, as they create an outcome where no one gains—a lose-lose scenario, resulting in a lack of resolution, and possibly exacerbating the situation.