The correct answer is B: Rich Londoners are quick to bet huge sums of money to settle trivial arguments. This is because they were betting whether or not he would starve in a month. This is of course, not an actual concern and just an exaggeration, since rich people don't starve.
Reading the entire poem aloud is the first step you should take once you have chosen a poem to memorize.
Memorizing one part at a time is a good memorizing strategy to use for this poem.
Moles, shrews, aardvarks, anteaters
It is usually the exposition.