(17) It is said that scent is the most powerful memory trigger of all the senses. (18) The brain is wired in such a way that the sense of smell is processed near the centers’ of emotion and memory. (19) So it’s no wonder that specific smells can generate amazing memories that make us feel just as we did when the events originally occurred. (20) Whatever the case may be, I know for myself that certain smells today always take me back to times that were innocent and full of exploration and wonder. (21) I’m thankful for the variety of spicy, sweet, and savory smells that continue to remind me of family, friends, and all the best things in life. What change, if any, needs to be made to sentence 20?
A) Delete the comma
B) Insert a comma after today
C) Change innocent to inocent
D) No change is needed in sentence 20

Which two lines in this excerpt from arthur conan doyle's "the contest" suggest that emperor nero was ruthless? each choice is in brackets. [an hour later the shepherd was well on his way to his mountain home, and about the same time the emperor, having received the chaplet of olympia for the incomparable excellence of his performance, was making inquiries with a frowning brow as to who the insolent person might be who had dared to utter such contemptuous criticisms.] [“bring him to me here this instant,” said he, “and let marcus with his knife and branding-iron be in attendance.”] [“rumours! ” cried the angry nero. “what do you mean, arsenius? i tell you that the fellow was an ignorant upstart, with the bearing of a boor and the voice of a peacock.] [i have half a mind to burn their town about their ears so that they may remember my visit.”] [“i conquered! you are mad, arsenius. what do you mean? ”] [it is whispered that for once the great god pan has condescended to measure himself against a mortal.”]