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 money was stolen by an employee. 

An employee stole the money.

An employee stole the money.

Explanation:

• An employee had stolen the money.: This active construction changes the tense from past ("was stolen") to past perfect ("had stolen"), which may alter the original meaning.
• An employee steal the money.: This active construction introduces a different tense and doesn't accurately convey the passive voice of the original sentence.
• An employee stole the money.: This active construction correctly maintains the original meaning and subject, forming the active voice.
• The money can be stolen by an employee.: This passive construction changes the tense from past ("was stolen") to present ("can be stolen") and introduces a modal verb ("can") which may alter the original meaning.