I would have kept your bicycle here if you had left it with me. The gi
Right Answer is: A
The given sentence use modal verb of past tense. The structures of active/passive voices for such sentences are:
Active: Subject + would + have + verb (IIIrd form) + object.
Passive: Object + would + have + been + verb (IIIrd form) + by + subject.
So, the passive voice of the given sentence would be:
Your bicycle would have been kept here if you had left it with me.