C I think I believe but I'm not sure
Answer:
She admitted she still hadn't read those books.
hope this helps! :)
Talk to the people that are making the noise and ask them to quite down .
Correction!!! I read this over a few more times and I think it is the fourth one because it says "words that were once considered slang are now words of full, legitimate standing in our language." It's talking about the the past tense and present tense of slang. So sorry for the confusion