An author uses indirect characterization by all of the following except describing the character's physical appearance describing how others respond to the character including dialogue with a regional dialect telling what the character thinks

describing how others respond to the character.

Explanation:

Indirect Characterization can be defined as the way by which an author tells us about a particular character in a story using means such as

a. the character's appearance

b. how the character feels

c. the motives of the character

d. the character's interactions with other people

e. the character's dialogue or discussion with other people and the effect it brings about.

Indirect characterization when used by an author helps to activate the imagination of the reader.

mark twain, real name samuel langhorne clemens, was an american writer, humorist, entrepreneur, publisher, and lecturer. among his novels are the adventures of tom sawyer and its sequel, the adventures of huckleberry finn, the latter often called "the great american novel". wikipedia