Identify a balance exercise suitable for beginners.

Standing on one leg is an excellent balance exercise suitable for beginners. This exercise helps improve stability, coordination, and proprioception—the awareness of your body's position in space—making it a foundational skill for more complex movements and activities.

For beginners, standing on one leg can be easily modified. They can start by holding onto a wall or a sturdy object for support, which allows for initial practice without the risk of falling. As stability improves, they can progressively challenge themselves by removing the support and balancing longer or even closing their eyes. This gradual increase in difficulty helps build confidence and balance without overwhelming the individual.

While the other options are valuable exercises, they may involve more dynamic movements or require a certain level of strength and balance that beginners might not possess yet. Squats and lunges focus on strength, while jumping jacks involve coordination and cardiovascular fitness, making these exercises less tailored for those who are just starting to work on their balance.