The correct option is B.
Extensive mining started in West Virginia in 1800s. The mining industry was successful in the state due to many reasons. One of the reasons is that, water wheels and burning woods were the major fuels that were used in the industries then, but when coal came around, it become the major fuel that was used by these industries, thus, the demand for it was very high.
A. Dictionary
When you look up an entry in a dictionary, you will find a lot of information besides just a word’s definition. In addition to the definition you will find a word’s part of speech (whether it’s a noun, verb, adjective, etc.), pronunciation, language of origin, syllable break up, prefixes (if any), suffixes (if any), and root.
It’s definitely not A and B is a no because highlighting /most/ of your text doesn’t help point out the key points or quotes. Determining the authors purpose helps to understand what your reading so I would pick C.
C. Validity Effect. After being exposed to something repeatedly, the likelihood increases.
