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

A kite’s nylon ‘manja’ (string) has cut the throat of a scooterist.

The throat of a scooterist has been cut by a kite’s nylon ‘manja’ (string).

The correct option that expresses the given sentence in the active or passive voice is The throat of a scooterist has been cut by a kite’s nylon ‘manja’ (string).

The other options are incorrect because:

• A kite’s nylon ‘manja’ (string) has been cut by the throat of a scooterist is grammatically incorrect. The subject of the sentence is "a kite's nylon 'manja' (string)," but the verb "cut" is in the active voice, which means that the subject is doing the action.
• A scooterist’s kite’s nylon ‘manja’ (string) has cut the throat of someone is grammatically incorrect. The subject of the sentence is "a scooterist's kite's nylon 'manja' (string)," but the word "someone" is not a specific object that can be cut by the string.
• The throat of someone had been cut by a scooterist’s kite’s nylon ‘manja’ (string) uses the past perfect tense, while the original sentence is in the present tense.