This quote means to describe the root of the deprecation of many people to properly conduct an investigation about any subject, and that root is lack of interest. In order to do something right, one must concentrate on that subject alone, ignoring all other distractions, but that can only be achieved if the investigator feels drawn to the subject - meaning they find it interesting.
Lack of interest is what accomplishes to "keep a man in everlasting ignorance...". In the case of ignorance, the investigation might go through, but it will most likely consist of a mindlessly structured compilation of other people's research which the investigator would hardly be able to interpret.
Answer:
Breaking up a word into its roots and affixes
Explanation:
Answer: I left the woods for as good a reason as I went there. Perhaps It seemed to me that I had several more lives to live, and could not spare any more time for that one. I had not lived there a week before my feet were apart from my door to the pond-side; and though it is five or six years since I trod it, it is still quite distinct. The surface of the earth is soft and impressible by the feet of men, and so with the paths which the mind travels. How worn and dusty, then, must be the highways of the world, how deep the ruts of tradition and conformity!
Explanation:
The correct meaning to the word "blackguard" is scoundrel.
I'd say D because C is only using a comparing word??