Answer:
B. mainly
Explanation:
The repeated word in the first paragraph that is an intensifier and actually emphasizing the fact that the story of Huck Finn is more fiction than fact is mainly.
Intensifier is known to be a word that actually strengthens or weakens another word close to it in a sentence.
From the passage, we discover that the author repeated the word "mainly" and not just that but also repeated the sentence bearing the word "mainly".
Here it is:
<em>"...he told the truth, mainly" </em>(Line 4) and
<em>"mainly he told the truth" </em>(Line 5).
We can then infer that actually not everything in the book is the fact. As the author repeats the word, "mainly", he tends to reiterate that not everything in the story is true; there is something fictitious.
So, the correct answer is mainly.
