I don't know much about the Sydney mines, but from the context, I can infer that the tunnels were unsafe. Whether being that they were collapsing, or they were filled with poisonous gasses.
Answer:
Capitalization Error
Explanation:
This sentence contians a capitalization error, because the word "doctor" should not be capitalized.
In the tense that is it being used, it is a common noun, therefore requires no capitalization.
If the sentence was Doctor John does not make house calls., then yes, it would be capitalized.
Thoreau lived on Emerson's land, which was the subject of one of his books.
The answer is b JSU’s is usually
