Select the option that expresses the given sentence in passive voice.Close the curtains!

The given sentence is an imperative sentence (a command/order).The rule for transforming an imperative sentence expressing a command into passive voice is:
$$\text{Passive Voice: Let + Subject (Object of Active) + be + Past Participle (V3)}$$
Following this pattern:Active: Close (Verb) the curtains (Object)!Passive: Let the curtains (Subject) be closed (V3)!