Contextual clues give hints that you can piece together like a puzzle. They help reveal things or drop subtle hints to almost tease the reader. They can also help you understand something such as a phrase or new words.
(You use them a lot like context clues but these are broader and more vague.)
Personally, I believe that the answer is C.
Hundreds of new words are added to the dictionary each year, and some of these do not have origins within the English language- therefore, other cultures and countries will have adopted these from their original language.
Hope this helps :)
The tone of this excerpt from Maureen Daly's famous story "Sixteen" is primarily intimate, but also frank, sentimental, chatty, colloquial, and a little bit impassioned. The narrator is describing, informally and enthusiastically, a casual, but seemingly very cherished, encounter with a boy, and she appears to be very comfortable sharing her intimate feelings with her interlocutor, judging by some of her expressions - "don't be silly, I told you before, I get around," "Don't you see? This was different," or "It was all so lovely."
Social commentary includes personal feelings about matters