Final answer:
The best intervention is to encourage the client to be independent.
Step-by-step explanation:
The best intervention by the nurse for a post-operative client getting out of bed and walking to the chair for the first time since surgery is d. Encourage the client to do as much as possible him- or herself.
Encouraging the client to do as much as possible themselves promotes independence, builds confidence, and allows the client to regain strength and mobility. It is an important step in the recovery process and facilitates a faster return to normal activities. The nurse should provide assistance and support as needed, but also encourage the client to take an active role in their own recovery.