Correct option is D
Option (d) is the correct meaning of the given idiom.
All bark and no bite: Refers to someone who talks a lot or threatens but does not take any real action. (Hindi: सिर्फ धमकी देना पर कुछ करना नहीं)
Example: The boss talks tough, but he's all bark and no bite.
3 Similar Idioms:
·
Cry wolf – Raise a false alarm.
·
Big hat, no cattle – Full of talk, no substance.
·
Empty vessels make the most noise – Those with the least knowledge or power are the loudest.