this is quiet the guess I apologise but I believe its c?
Answer: i want to be a philosopher in the future.
Didn't specify, but thats a sentence.
Or "Philosophers study knowledge."
Explanation:
Well, most slang words that have been used for a long period of time have been added to the dictionary, but then again, some other slang words have not. So, it really depends on the word.
But, for a straightforward answer i would say yes, just because some slang words are in the dictionary.
~Hope this helped