Select the most appropriate meaning of the given idiom.
Keep someone at arm's length

Correct option is A

The most appropriate meaning of the idiom "Keep someone at arm's length" is (a) "Avoid becoming friendly with someone."
 When you keep someone at arm's length, you maintain a certain distance from them, both physically and emotionally.
 This implies that you are not getting too close to them or forming a close relationship.
 Example: "She decided to keep her new colleague at arm's length until she got to know them better."