Which of these qualities is generally true of both traditional and modern plays?

They fall into one of these two categories: tragedy or drama.

They contain exposition, rising action, climax, and falling action, in that order.

They conclude with the resolution of the main conflict they explore.

They contain elements such as dialogue, setting, characters, and plot.

I would say that the qualities that are generally true of both traditional and modern plays is that they contain elements such as dialogue, setting, characters, and plot.

The other options are incorrect because:

They aren't necessarily just dramas or tragedies, they could also be comedies.

The order of these events isn't that strict.

They don't necessarily resolve the conflict.