please explain the solution for this question...



His campaign for sanitary conditions in operating rooms finally successful, Sir Joseph Lister lent his name to the company that developed Listerine, the first antibacterial liquid.


a) His campaign for sanitary conditions in operating rooms finally successful

b) Since his campaign for sanitary conditions in operating rooms had been eventually successful

c) Because of the eventual success of his campaigning for sanitary conditions in operating rooms

d) His campaign for sanitary conditions in operating rooms being eventually successful

e) Campaigning, eventually successfully, for conditions to be sanitary in operating rooms



answer : A