Anne Frank time was still considered courting or supervised dating and parents were always tagging along on the date
Morbid and Cheerful
Virulence and Mildness
Propagate and Discourage
I'm assuming these should be right from what I've learned from a thesaurus. Hope this helps.
It reveals the speaker's profound emotion towards her love. ??
The answer is b., due to how the rhythm seems to be more fluidic