I'm taking an educated guess and saying A, it might be wrong though
A. Although opponents may argue we should not ban bottled water, banning bottled water reduces waste.
Not only does this statement acknowledge the opposing argument, it also acts as a rebuttal by supporting the claim that bottled water should be banned.
A journal written by frontier settlers will most likely not mention Manifest Destiny much. This was an idea that permeated policy, but it was rarely openly stated, especially among common people. However, the journal is likely to mention some ideas related to Manifest Destiny, such as the superiority of Western culture.
A journal of this type is also likely to mention how life was at the "frontier" and how American Indians struggled to keep their lands. It would also outline the difficult situations that settlers faced, such as being alone, being exhausted and being attacked by Native Americans.
Answer: C
Explanation: Semicolon to seperate two independent clauses that could act like stand-alone scentences, and commas on either side of "however" due to it being a transition