Since the subject of shakespeare's poem is disloyalty and ingratitude – things that are not jolly – the lines "then heigh-ho, the holly! this life is most jolly" have a tone.
a. sarcastic, mocking
b. soothing
c. carefree

This is a guess, but I think its A. I could be wrong though.

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)