To change the sentence "The game was won by the Bluejays" from passive voice to active voice, you would revise it so the person or thing doing the action (the Bluejays) comes before the verb. The correct response is:
Revise it so the person or thing doing the action (the Bluejays) comes before the verb (was won).
The active voice version would be: "The Bluejays won the game."