C is correct i believe. its not A because that could not be a sentance byitself, not b because im sure you know why and d might be but then the teacher would be trying to explain to you something other then the rules of punctuation
Answer: ask your teacher you need help
Explanation:
It might me the aperture but since you didn't put any options there might not have been I'm just saying so I'm guessing it's aperture
The Questions: Who? What? When? Where? and Why?
