What is the best way to change this sentence from passive voice to active voice?

ABy the Moon's orbit around the Earth, the tidal effects of the ocean are created
BThe Moon's orbit around the Earth creates the tidal effects of the ocean
CCreated are the tidal effects of the ocean by the Moon's orbit around the Earth
DThe ocean's tidal effects are created by the Moon's orbit around the Earth

Verified Answer :

The correct answer is ''b'
The Moon's orbit around the sun /creates/ the tidal waves of the ocean
                subject                        verb        object

Answer:

B) The Moon's orbit around the Earth creates the tidal effects of the ocean