Final answer:
In the story "The Notorious Jumping Frog of Calaveras County," Mark Twain demonstrates regionalism through the use of distinct language, portrayal of customs and traditions, and depiction of regional manners.
Step-by-step explanation:
In the story "The Notorious Jumping Frog of Calaveras County" by Mark Twain, the author demonstrates regionalism through all of the options mentioned: a) through the use of distinct language, b) through the portrayal of customs and traditions, and c) through the depiction of regional manners.
Firstly, Twain uses distinct language that reflects the regional dialect and speech patterns of the characters in the story. This helps to create a sense of place and authenticity.
Secondly, Twain portrays customs and traditions that are specific to the region of Calaveras County, California. This includes the frog-jumping contest and the characters' preoccupation with gambling and betting.
Lastly, Twain depicts regional manners, such as the laid-back and informal attitudes of the characters. All of these elements contribute to the author's demonstration of regionalism in the story.