Sharks are my special interest.

I hope my understanding of the question will help some people.

A is not supported because the epochs are widely separated making borrowing stories very unlikely.

Further, even without the widely separated Epochs context, assuming they borrowed themes is still a smuggled-in assumption. It makes sense, but the text does not support it.

B is not supported because we are assuming the storytellers' understanding. They may understand nothing about the universal aspect and still be good at storytelling. Nothing in the passage suggests that the storytellers are aware of it as a universal aspect of human culture.

C is supported because the passage states that the common themes being discussed are found in the world's cultures. The evidence supports this by highlighting the parallels between cultures.

My interpretation is that the word "All" doesn't matter because we are examining what the evidence most supports, we are not examining what the evidence makes definitively true.

In other words, although the evidence provided only supports, not guarantees, the statement, it most strongly supports option C, leading us to believe that C is now more likely.

D is not supported because the passage does not discuss the importance of storytelling.

It is our assumption that something universal is important, but the passage does not explicitly state that storytelling is important.

Just because it was prevalent in the past and present does not give us any evidence of the importance placed on it in either time period.

E is not supported because the point of the passage does not talk about the storyteller's motivations.