'Finally' is the answer the others don't make sense if you try to read them with the rest of the sentence.
In a newspaper, issues in a community would be found in:
• editorials
• columns
• letters to the editor
The question refers to Chief Seattle's speech - a Speech by the chief of the Duwamish people.
In his speech, he says:
"Your religion was written on tablets of stone by the iron finger of an angry God, lest you might forget it. "
So the correct answer is B.
It also makes sense, since it's not Moses who wrote on the tablets, but who received the tablets.