Question

Read this excerpt from an argumentative essay.

Answer 1

For what is required by the question and the options of answers provided, I assume the underlined word was 'but'. If that's the case, then the best option would be letter B. Both 'however' and 'but' are adversative adverbs, that is, transition words with an adversative implication - They connect two informations that generally contradict one another (like in the example above). The words 'although', 'nonetheless' and 'nevertheless' have the same function, although used in different situations.

Answer 2

I think the correct answer from the choices listed above is option B. The transition word that would best replace the underlined word would be however. It is used to introduce a statement that contrasts with or seems to contradict something that has been said previously. Hope this helps.