Which of the following is not a reason the plague (black death) was able to spread in cities?
people carried the fleas to infect each other as they traded goods and services.
the dirty streets provided a food source for rats, which carried the plague.
cats were revered, and each family had several of them to eat rats around the house.

“well,” he says, “there’s excuse for picks and letting-on, in a case like this; if it warn’t so, i wouldn’t approve of it, nor i wouldn’t stand by and see the rules broke—because right is right, and wrong is wrong, and a body ain’t got no business doing wrong when he ain’t ignorant and knows better. it might answer for you to dig jim out with a pick, without any letting-on, because you don’t know no better; but it wouldn’t for me, because i do know better.” the meaning in this excerpt is