The word that is an example of comparative degree adjective is louder. The comparative degree adjective shows that there are two objects that are in comparison while the superlative is when there are three or more items being compared.
Prufrock end it calling himself crab-like. When you get to the lines 120 to 131. the poems is already giving you some incredible and impossible ocean imagery. One that has the singing of mermaids and the sea-girls wearing seaweed. If the world is so isolating, being a crab in the middle of the described imagery is not that bad. And that is the point. The correct answer is:
D Prufrock wishes he were a crab living on the seafloor
