The question doesn't have enough info to answer
Answer:
to effectively convey his topic/purpose
Explanation:
in couching his appeal to the audience as an appeal to duty,
I would say D) Because swimming races are won by inches, the new suits can make a difference. It's joining a statement and a reason for the statement.
<span>According to tom, Mayella’s father got mad at her and beat her because s</span>he made romantic advances at Tom.
You didn't provide us with the text.
Twain accomplishes his purpose chiefly through telling a story within a story, also called a "frame story".