The correct answer is <span>a. especially greedy. The Pardoner doesn't even hide his own avarice. People who want to get a pardon for their sins must pay him. He is also selling many false relics. And he really likes to brag about it, still telling his fellow travelers that avarice is a sin.</span>
All of the nouns used (hammer, chain, furnace, brain, anvil) are explaining mighty things that the tiger is being compared to. The poem is simply saying that they are smart, speedy, and strong.
I hope this helped! If you have further questions don't be afraid to ask!
~Travis
The sunrise is quick and unexpected. Because it is so easy, I would suggest you try to answer this yourself. :)