句子分析

　　A

　　Lee's proposal 1 (of a "departmental head responsibility system,") 2(combined with a rigorous civil service evaluation mechanism), clarifies the relationship between powers and responsibilities, 3(while also playing an incentivizing role to provide institutional guarantees for accelerating development.)

　　主句：

　　Lee's proposal (...) clarifies the relationship between powers and responsibilities, (...)

　　現象1：of引導的定語從句，修飾"proposal"

　　"...of a departmental head responsibility system,..."