Select the option that expresses the given sentence in passive voice.

Can you carry my bag upstairs ?

Can my bag be carried upstairs by you?

The correct passive voice of the given sentence "Can you carry my bag upstairs?" is Can my bag be carried upstairs by you?

The active voice of the sentence is "Can you carry my bag upstairs?" This sentence is in the present tense, which is used to describe an action that is happening now or that happens regularly. The active voice of the sentence is formed by putting the subject of the sentence before the verb and the main verb. In this case, the subject of the sentence is "you" and the main verb is "carry." So, the active form of the sentence is "Can you carry my bag upstairs?"

The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the past participle of the main verb. In this case, the subject of the active sentence is "my bag" and the main verb is "carry." The past participle of "carry" is "carried." So, the passive form of the sentence is "Can my bag be carried upstairs by you?"

The other options are incorrect because:

• Was my bag carried upstairs by you? This sentence is in the past tense, but the action of carrying the bag is not finished.
• Could your bag be carried upstairs by me? This sentence is in the conditional mood, which is used to express a possibility or a hypothetical situation. However, the situation in the sentence is not hypothetical.
• Can your bag be carried upstairs by me? This sentence is in the active voice, but the subject of the sentence is "you," which is not the one being acted upon.