问大全 5 的句子结构

9.     A controversial figure throughout most of his public life, the Black leader Marcus Garvey advocated that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom.

(A) that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom

(B) that some Blacks return to the African land symbolizing the possibility of freedom to him

(C) that some Blacks return to Africa which was the land which symbolized the possibility of freedom to him

(D) some Black’s returning to Africa which was the land that to him symbolized the possibility of freedom（A）

(E) some Black’s return to the land symbolizing the possibility of freedom to him, Africa

想请教一下句子结构，A controversial figure是主语吗，the Black leader Marcus Garvey又做什么成分？多谢