A sentence has been given in Active/Passive voice. Out of the four alternatives suggested below, select the one which best expresses the same sentence in Passive/Active voice. 
 

The noise of the baby kept me awake. 

I was kept awake by the noise of the baby.

I was kept awake by the noise of the baby.

Explanation:

• I was kept awake by the noise of the baby.: This passive construction correctly reverses the subject and object while maintaining the original meaning.
• The baby kept me awake by the noise.: This active construction changes the word order and the preposition, which makes the sentence less clear and natural.
• I kept myself awake due to the noise of the baby.: This active construction changes the subject and introduces a different action ("kept myself awake") which is not present in the original sentence.
• I remained awake by the noise of the baby.: This active construction changes the verb and introduces a different action ("remained awake") which is not present in the original sentence.