What is the speech or manners representative of a specific geographical location termed?

The speech or manners representative of a specific geographical location is termed as Regionalism.

Explanation:

Regionalism can be described as a feature that is common to only a specific geographical region. It is not a common feature for the whole country but only the common feature of a specific region. For example, The Shanghainese language is only common to a particular region of China, where other regions of the country speak Mandarin more in common. So, Shanghainese would be the regionalism of that particular location.

the answer is c   it wants me to write more for no reason bu c is the answer