How does thoreau use logos in this passage?

B.

Explanation:

The main way in which Thoreau uses logos in this passage is by showing the soundness of his argument through a number of analogies. In this example, Thoreau talks about the role of some men for the state. These men, he argues, are akin to machines, wood, earth, stones or wooden men. HE compares the men to all these items in order to show the logic of his argument.

they insisted that there was not enough time to learn everything.  

explanation:

if they were going to steal the answers that is simply because they insisted that there was not enough time to learn everything.