Choose the most appropriate option to change the voice (active / passive) form of the given sentence.
They sealed all unauthorized farms on the highway.

Options

A. a) They are sealing all unauthorized farms on the highway.
B. b) All unauthorized farms on the highway were sealed.
C. c) The authorities were sealing all unauthorized farms on
the highway.
D. d) All unauthorized farms on the highway have sealed the
authorities.

Answer

B