Use keywords such as I, we etc.
I dont think its right but im guessing its neither
Answer:
I think it would be "But before long these specimens began to seem less valuable." It should be this quote, because it lets the reader know that there is going to be a shift in the story.
I would say cutting the pbj in diagonal would be the most important shot out of the process
It means to properly understand what the writer means (and assume their intentions, feelings)