True brevity ...... in saying only what needs to be said.

Solution (By Examveda Team)

In this context, the word "brevity" refers to being concise and saying only what is necessary. The word "resides" is the most suitable choice as it implies that true brevity exists or can be found in saying only what needs to be said. It conveys the idea that brevity is a quality inherent in the act of saying only the essential information.