The answer is A {Both Poe and King use details that match their selected genre.
The second line contributes to a tone of excitement and hope .
Explanation: As the title of the poem suggests ,the heart and the hand both are seemingly untamed .The second line begins with the aliteration and mentions about a 'fixed wild and wandering thought '.The poet describes both opposite reactions of being wild and untamed as against the thoughts being fixed.the thoughts being fixed is indicative of a better tomorrow which bring in lot of hope and excitement.
What do you mean they become part of it and help you actually remember them if that is the answer you wanted please let me know