Question

Which sentence is in the passive voice?

a. a siren cut the night's silence.
b. rust had ruined the little red wagon.
c. wispy clouds floated in a clear blue sky.
d. the photographs had been taken by a friend of my grandfather's?

Answer 1

D. the photographs had been taken by a friend of my grandfather's.

It is in the passive voice because the subject "photographs" is receiving the action which is "taken"