Answer
the building of something, typically a large structure.
Hello!
I think Mark was using summarizing, because of the way Mark phrased his sentence. "The main point" does invoke a summary of a sort. Now, C is possible, as well, but not likely. I'd suggest sticking to A.
Have a wonderful day! :)
-L
Answer:
1. Seeing and hearing is the correct answer.
2. It shows that truth is hard to discern is the correct answer.
Explanation: