Hmm tough one...
I would say B
Calm-placid
enthusiastic-zealous
palpable-tangible
scruples-morals
I hope this helps! Have a great day!
Parallel structure: means using the same pattern of words to show that two or more ideas have the same level of importance in the sentence
so maybe ... " but the good introduction she had been writing all night did not meet her standards "
I'm not 100% sure on my parallel structured ending suggestion.lol
Answer:
couch potato is a metaphor, since it compares without using like or as.