Correct option is B
Option (b) is the correct meaning of the given idiom.
Hang on every word means to listen with full attention and great interest.
Example: The fans hung on every word the actor said during the speech.
Other similar idioms:
·
Be all ears – to be eager to listen.
·
Lend an ear – to listen attentively.
·
Pay attention – to concentrate on what is being said.