Respuesta :
The correct answer is option C - The writer wants to conceal the identity of the person who broke the jar.
The passive voice is used to emphasize the action and the object of a sentence rather than the subject.
The most common uses of passive voice are:
1-Reports of crimes or incidents with an unknown actor.
2-Scientific Texts.
3-When you want to emphasize the action and the doer of the action is irrelevant.
As regards grammatical form, it is made up of the auxiliary verb to be + past participle.