Brook Farm was a kind of intellectual colony for Transcendentalists in the 1840s. It was located in Massachusetts. Hawthorne lived there for a time (and even wrote a novel about it, called the Blithedale Romance). So your best answer is C.
It would seem to be C because he choose that field and since it’s unionized he is having a hard time finding a open spot
The correct answer is C. You're generating words that suggest possible sentences or paragraphs.
Webbing is a type of brainstorming that you do after you've decided on your topic and themes. Here, you will need specific examples, which is why you are thinking of words and phrases that you might use while actually creating your sentences and paragraphs. A is incorrect because that is brainstorming, not webbing.