Final answer:
The nursing assistant should be beside and slightly in front of a visually-impaired resident when helping them walk to effectively guide and ensure their safety.
Step-by-step explanation:
When helping a visually-impaired resident walk, the NA should be beside and slightly in front of the resident. This positioning allows the nursing assistant (NA) to guide effectively and ensure the safety of the resident by anticipating any obstacles and assisting with navigation. The NA can offer an arm for the resident to hold, facilitating support and direction while walking.