Correct option is A
Option (a) is the correct meaning of the given idiom.
Idiom: Ring a bell
Meaning: To sound familiar or to recall something vaguely. It refers to hearing or seeing something that triggers a memory.
Example: That name rings a bell. Have I seen you in a movie before?
Other related idioms and their meanings:
· Jog someone's memory – to cause someone to remember something.
· Come to mind – to suddenly remember or think of something.
· On the tip of my tongue – when you almost remember something but not quite.