In this sentence, there exists a single adverb, which is the term increasingly.
Adverbs function to modify verbs or adjectives, and here, the word increasingly modifies the adjective ineffective.
No other adverbs are present in the sentence, making increasingly the only valid choice.
I thinks it's B but C can also be an answer but I would go with B
Could you please show me the options?
The passage from "Civil Disobedience" by Henry David Thoreau that subtly emphasizes the necessity for individuals to think for themselves and challenge authority is: "seen from a higher still, and the highest, who shall say what they are, or that they are worth looking at or thinking of at all?" In this statement, he highlights significant deficiencies within society and poses this question to encourage deeper contemplation beyond the superficial narratives presented by politicians and the media. Thoreau's assertion is that individuals ought to form their own beliefs based on their personal insights.