单选题 According to the passage, what will be crucial whether in the job or switching to learn the skills you need?

A、 Hard work
B、 Flexibility
C、 Responsibility
D、 Perseverance

【正确答案】 B

【答案解析】[解析] 事实细节题。根据文章第一段最后一句Flexibility will be crucial，whether in the job or switching to learn the skills you need可知，无论是在工作中，还是学习所需技能时， flexibility“灵活性”是非常重要的。故答案为[B]。