Answer:
A) He may get stuck in a market niche
Explanation:
According to the question, so far all of his clients have come from hobby clubs: first, the stable, and then, the dance studio. He may soon run out of clubs to offer his painting lessons, or run out of hobbysts that are also willing to pay money for painting lessons. Jason should try to diversify his market share. He can offer his lessons online so that anyone, whether they belong to a hobby club or not, can get in touch with him if they are interested in learning how to paint.