The main benefit of a constantly changing language is that it allows us to .

1. express concerns over proper usage
2. revise the context of little-known words
3. understand words that were used long ago
4. choose words that express precise meanings

- Choose words that express precise meanings.

Explanation:

Language is not merely a medium of communication but a reflection of our culture, lifestyle, and history. Since our culture and lifestyle are subject to change along with time, so does the language. It is modifying every day to cope up with our altering lifestyle and experiences that are primarily due to various reasons like the development of new ideas, various innovations, technological advancements, etc.

As per the question, the primary benefit of constantly evolving language is that it permits an individual to 'chose words that best express the precise meanings' and convey their intended message efficiently. Since people's lifestyles and experiences are transforming every day and bringing in new trends, similarly the communication patterns are also subject to change. Thus, the language also is subject to change with the evolving lifestyles to cope up with it. Hence, the constantly changing language assists people to convey their messages more precisely in fewer words. For example; 'to take part' has been replaced with 'participate' while 'am/is/are able to' is replaced with 'can', etc.

a lot

explanation:

the answer is d my man/woman the first passage is real the second is a setting.