D) pioneers believe the Oregon Trail to be sacred because 300,000 people travelled it
To ward of Tybalt... Romeo practically could already tell that someone or many people were going to die on the street between the two houses
A, as this is where the story turns from bad to good.
Or D, as this is where the story turns from good to bad.
Most likely, the answer is A.
He says that he is rich, but not in the material sense. He is rich because he is finally free. He doesn't have to work anymore or get beaten, and he has Huck Finn and Tom Sawyer as friends, which is another blessing for him.
A. Could not be the answer because the sentence needs correcting.
B. Does, "Have been mainly due to building practices at the fort" make sense? Ah, no!
C. Were seems a bit blah to me and doesn't really sound right in the sentence
D. Makes sense! "Still, the abundance of preserved tablets are mainly due to building practices at the fort". Does this make sense? YES!!!!
Therefore your answer is D. Are