单选题 Whenever the government increases public services, ______ because more workers are needed to carry out these services.
A. employment to rise B. employment rises
C. which rising employment D. the rise of employment

【正确答案】 B
【答案解析】[解析] 语法应用。
逗号前是一个让步状语从句，because又引导一个原因状语从句，因此所填之处应为一个完整的主谓结构；B为答案。