Voice
In the following question, a sentence has been given in Active/Passive Voice. Out of the four/five alternatives suggested, select the one which best expresses the same sentence in Passive/Active Voice. He knew that his own life was unjust.
It was known by him that life was unjust.
It was known by him that his own life was unjust.
It was known to him that his own life was unjust.
It was known to him that his own life had been unjust.