Answer:
Ravan was killed by Ram
Step-by-step explanation:
Passive voice connotes the change in the subject matter in a sentence. It means to move the point of emphases from the subject to the verb and the object.
A passive voice indicates that one changes the subject matter of a sentence to the object, and the object matter to the subject matter leaving the verb unchanged.
Example includes
Active - Ram killed Ravan into passive voice
Passive - Ravan was killed by Ram