Sentence Correction

An artist who explored Spanish cultural themes, Julio Gonzalez was world renowned for his art.

(A) An artist who explored Spanish cultural themes, Julio Gonzalez was world renowned for his art
(B) Julio Gonzalez is an artist whose art explores world renowned Spanish cultural themes
(C) Artist Julio Gonzalez has explored Spanish cultural themes, the art of whom is world renowned
(D) An artist who has explored Spanish cultural themes, Julio Gonzalez' art is world renowned.
(E) Julio Gonzalez is a world-renowned artist whose art explored Spanish cultural themes

OA is A
The statement either passive or should be active is what I cant determine here. An Expert contribution will be appreciated.