Correct option is C
In changing a question to passive, the modal ("can") remains first: "Can + object + be + past participle + by + subject?"
Information Booster
Questions in passive voice:
Active: Can + subject + base verb + object?
Passive: Can + object + be + past participle + by + subject?
Focus shifts to whether the action can be done to the object.
Additional Knowledge
Option 1 is not a question at all.
Option 2 lacks the agent (by you) and is incomplete.
Option 4 is not in question form; word order is incorrect for interrogation.