S2 문장의 [______]에 들어갈 단어는?

난이도 고난도 · 힌트를 덜 열수록 높은 점수 (현재 5점)
Mike May lost his sight at the age of three.
Because he had spent the majority of his life [______] to being blind ― and even cultivating a skiing career in this state ― his other senses compensated by growing stronger.