Which of the following exercises would be appropriate during a foundational phase of physical readiness training when an individual is returning from knee injury?

During the foundational phase of physical readiness training, particularly for someone returning from a knee injury, it is essential to focus on exercises that promote stability, strength, and safe movement patterns while minimizing the risk of re-injury. The assisted squat is a suitable choice because it allows the individual to gradually strengthen the muscles around the knee joint while providing support, which can be crucial for someone recovering from injury.

Using assistance during the squat helps maintain proper form and reduces the load on the knee, allowing the individual to focus on their range of motion and technique. This controlled environment is vital in the early stages of recovery, as it fosters muscle engagement and improves joint stability without imposing excessive stress on the healing tissues.

In contrast, other options may not align with the careful approach needed during recovery. For example, exercises like push presses, jump training, and box jumps involve higher levels of intensity, explosive movement, and demands on agility and stability, which can pose risks for someone still adapting strength and coordination following a knee injury.