Which of the following challenges involves setting long-term goals?

The challenge that involves setting long-term goals is "Inspire a Shared Vision." This aspect focuses on the ability to envision a compelling future and to communicate that vision to others, thereby motivating them to work towards achieving those long-term goals collectively. This process includes not only the act of establishing the goals but also building enthusiasm and commitment among team members or followers, which is crucial for successful collaboration and achievement of those long-standing objectives.

The other challenges, while essential leadership skills, focus on different aspects of leadership. "Model the Way" emphasizes demonstrating values and behaviors that are critical to setting a standard. "Challenge the Process" encourages innovation and experimentation, typically focusing on addressing immediate challenges rather than long-term goals. "Enable Others to Act" centers on fostering collaboration, empowering individuals, and building trust within a team, which supports goal realization but does not specifically pertain to the formulation of long-term objectives.