He asked her to think. The conclusion is inevitable. No good teacher just gives the answer, but wants his students to arrive at it on their own, given some facts and some context.

So, no, not directly.

The answer is, "For His own glory."

Most people, hearing that, might conclude that God is a megalomaniac, a hostile deity that is perfectly willing to let billions of intelligent beings writhe eternally in flames just to satisfy his own ego.

That is why Dr. Sproul went to such lengths to supply context to the question and it's answer.