Final answer:
The nurse should ask the client if they have any friends or family members nearby to determine if the client is socially isolated.
Step-by-step explanation:
The nurse should ask the client the following question to determine if the client is socially isolated: Do you have any friends or family members nearby? This question helps assess whether the client has a support system and social connections, which are indicators of social isolation. If the client does not have friends or family nearby, it may suggest that they are socially isolated and may require additional support.