“This case is as simple as black and white.”
How is this case literally about black and white?

I don't know which case you're talking about but it's most likely suggesting that the sides in this case are easily distinguishable.

I think your question is incomplete. Is there more to it that helps explain the actual question? Either way, something being "as simple as black and white" means that it is obviously different than it is perceived due to human error (most of the time)

Explanation:

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.

answer: your option is c.

explanation: