单选题 Workers maintain that the company's ______ to implement modern safety regulations puts everyone in the factory at risk of injury.
A. discouragement B. indecision
C. unwillingness D. hindrance

【正确答案】 C
【答案解析】[解析] that从句的主语部分表示“公司不愿意实行最新的安全规则”，因此C为正确答案。