An action in a sentence can be represented in two ways, namely active and passive voice.
The passive voice always uses the past participle form of the main verb irrespective of any tense. Only the auxiliary verbs depend upon the sentence given in the active voice.
The correct answer is A)The bell has been rung by the boy.
Option A is correct as the given sentence is in the active voice and to transform it into the passive voice, the subject of the given sentence (The boy) comes in the place of the object (the bell) and vice versa. Also, as the given sentence is in the present perfect tense.
Options B, C, and D are wrong as the past continuous tense, simple past tense, and 'being' cannot be used respectively.