‘Being agile’ refers to embracing the mindset and principles of agility, not just following agile practices mechanically. Option D illustrates ‘being agile’ because the customer has embraced the iterative approach and focuses on requirements that add real value, which reflects true agile values such as customer collaboration, responding to change, and delivering value early and continuously.

Options A, B, and C describe activities related to agile practices but don’t necessarily reflect the deeper agile mindset or cultural shift fundamental to ‘being agile’.