The answer should definitely be B
Hope this helps!!!
The first line, because dialect in literature means a form of writing that shows the accent and way people talk. Because of the definition where it says “might ‘a’ thought” is dialect.
The verb in the sentence is, to follow (his father's footsteps). This verb is used as an infinitive. An infinitive is a word in the verb form that functions as a noun, adjective or adverb. Infinitives are generally introduced by the word "to".