Question

what is the meaning of the word obdurately as used in the passage? despite the mountain of opposing evidence, nick stubbornly refused to change his opinion on the virtues—or lack thereof—of getting eight hours of sleep every night. he obdurately insisted that his brain was more alert with only five hours of sleep and that more sleep simply made him feel lazy. passionately gently but firmly unyieldingly

Explanation:

The context shows Nick is stubborn and won't change his opinion. "Obdurately" here means in a way that is unyielding or inflexible, similar to "unyieldingly". "Passionately" implies strong emotion which isn't the focus here, and "gently but firmly" doesn't match the stubborn - like tone.

Answer:

C. unyieldingly