Which of the following is classified as a nursing intervention?

Providing assistance while the patient walks is classified as a nursing intervention because it involves direct actions taken by the nurse to support the patient's mobility and safety. This intervention is part of the nursing care plan aimed at helping the patient achieve their mobility goals. Assisting patients during ambulation can prevent falls, ensure proper use of mobility aids, and promote independence as much as possible.

In this context, the other options do not represent nursing interventions. The first option indicates a patient goal or outcome rather than an action taken by the nurse. The third option describes a patient's condition and limitations without indicating a response or action by the nurse. The last option identifies a nursing diagnosis related to mobility but does not specify an action or intervention. Thus, the correct answer reflects an active role in patient care, focusing on supporting the patient during a specific task.