Which of the following is a likely challenge for designers when creating a game based on player skill?

One likely challenge for designers when creating a game based on player skill could be finding the right balance between difficulty and accessibility. Designers need to ensure that the game is challenging enough to keep players engaged and motivated to improve their skills, but not so difficult that it becomes frustrating or discouraging. This requires careful consideration and playtesting to determine the optimal difficulty curve and progression throughout the game.