C.
You should read carefully, and you should be ale to find the theme.
The answer for 15 is C.
The answer for 16 is A.
You did not provide the excerpt but in the end Jekyll was not able to permanently resist. It was implied that he was actually Hyde deep inside and that Hyde is the one who will overtake and he won't be able to come out again. In the end he dies as Hyde and people find out what happened out of letters that he sent while he was sane.
Cold is it because it has a great day and the same time I don't know if it was the same as a whole lot of people who have a great day and the same time I don't know if it was the
E) Death is a dignitary who when he comes announces is to be received with formal manifestations of respect, even by those most familiar with him.
The author made that sentence into personification because they acted as if death was a man, that everyone knew.