The answer is context clues. This is because you're using the clues from the other words (sentences/paragraphs) to answer the definition of the word.
It’s definitely D. Here’s the definition, “Software piracy is the unauthorized use, copying or distribution of copyrighted software.”
Cherry means you could get greedy and not be able to focus on the simple things in life.
I really hope I could help! good luck :)
A mirror is opaque because you cannot see through it