Final answer:
Twain is pleased with the intersection of personal anecdotes and informational content in his book. Therefore, the correct option is C.
Step-by-step explanation:
The author's intention for writing the book is c) Twain is pleased with the intersection of personal anecdotes and informational content in his book. Through the use of personal anecdotes and informational content, Twain effectively conveys his experiences and messages to the readers. This is evident in the passage where Twain utilizes dialogue, vivid details, and vivid descriptions to shape the tone and mood, connect the reader to the text, and build tension to support the conflict in the anecdote.