Question

Which sentence contains a verb in passive voice?

Answer 1

The answer is C
Passive Voice is when you have: be + verb (past participation)
For instance, was taken, was contained,...
The photograph was taken with the digital camera is a passive voice because an object is a subject in that sentence, and you can not say the object does the action by putting verb in it; therefore, you use was taken 
A photographer took the photo. In this sentence, the photographer is a human that can do the action, so it is active voice