Question

what is the meaning of the word obdurately as used in the passage?
despite the mountain of opposing evidence, adam 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.
unyieldingly
passionately
gently but firmly

Explanation:

La palabra "obdurately" se usa en un contexto donde Adam no cambia su opinión a pesar de la evidencia en contra. "Unyieldingly" significa no ceder, lo que coincide con su actitud de insistir en su creencia a pesar de todo. "Passionately" implica emoción, pero el texto enfatiza la resistencia, no la pasión. "Gently but firmly" no captura la idea de no cambiar a pesar de la evidencia.

Answer:

unyieldingly