Respuesta :
Answer:
The correct answer is:
Option:C - The subject is unknown
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The sentence is written in the passive voice because the subject is unknown. The correct option is C.
What is passive voice?
Passive voice is a way of writing. In passive voice, the object is written first then the verb, and then the subject. The passive voice is used when the object is more important than the subject and when the subject is missing.
Thus, the correct option is C. The subject is unknown.
Learn more about passive voice
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