单选题 Legislation has been developed throughout the 20th century, attempting to protect employees from ______ dismissal by their employers.
A. uhrecognizable B. undeniable C. unreachable D. unjustifiable

【正确答案】 D
【答案解析】[解析] unrecognizable“未被承认的，无法认出的”；undeniable“不可否认的，无可争辩的”；unreachable“不能达到的”；unjustifiable“不合理的，不正当的”。选D。