Answer:
B: 6
Explanation:
In an essay, the analytical paragraph is a body paragraph. It presents evidence in order to prove the thesis. When an analytical paragraph stands alone (is not in an essay), the topic sentence is the thesis.
A, The river is constantly changing. I did this last year so I know what the answer is. Fickle means changing frequently or in my term, stubborn. In his point of view, the river has a mind of its own and changes often. Which he described as "fickle." It may be hard for Twain to pilot a steamboat, if the river is constantly changing.
Not consisting of or related to language : not linguistic
… nonlinguistic sounds such as whistles, yells, laughs, and cries … —American Speech
… produce as their immediate response a linguistic or nonlinguistic signal of understanding or continued attention. —W. Nelson Francis