A dependent clause is a group of words with a subject and a verb, but doesn't make much sense on its own. A lot of times, especially in a sentence with a comma, you can split the sentence and see if it makes any sense.
6. "Before we hiked"
7. "When we go on nature field trips."
8. "Since John was an expert of volcanoes"
9. "If you want to see something closer."
10. "After a volcano erupts"
None of those answers make sense as independent sentences, which is how you can tell they're dependent clauses; they depend on the other part of the sentence.
For example, it means everyone contributes, so when you go to dinner with a group of people, you would all pay for your own bill.
The basic idea of this quote )and the lines that come before it) is that one must live life to the fullest extent possible. Thoreau is giving this as his reason for coming out into the woods. He doesn't want to be in the position where, when he's about to die, he realizes that he never really lived.
B. Ribsy rolled in the dirt and that's why Henry went back home to clean him up while Maude the Mule was Performing.
I think its C) Someone on a solitary path
