Which of the following is an example of progression in BIG walking?

The answer is centered on the incorporation of motor and cognitive dual task challenges as a means of progression in BIG walking. Progression in this context refers to the gradual increase in complexity and difficulty of tasks to enhance the individual's physical abilities and incorporate various aspects of movement and cognition.

By adding dual task challenges, such as requiring the individual to walk while engaging in a cognitive task (like counting or naming objects), the therapy aims to improve not only the gross motor skills related to walking but also the ability to manage simultaneous tasks. This reflects real-world scenarios where individuals often need to walk while attending to other tasks, thereby promoting functional mobility and independence.

Other choices represent different training approaches but do not necessarily align with the idea of progression. Walking only in straight lines might limit the adaptability of walking patterns, and practicing in a single environment does not encourage the necessary variability in practice that can lead to improvements in real-world functionality. Using a treadmill exclusively may restrict the individual's exposure to diverse walking contexts and conditions, which are important for comprehensive skill development. Thus, the progressive challenge offered by dual tasks is a key strategy for advancing BIG walking capabilities.