Convert the sentence provided below from its passive voice structure to an active voice structure:
It has been alleged that confidential data was being leaked by insiders within the firm.

Correct option is C

The correct active voice of the given sentence is (c) Insiders have allegedly been leaking confidential data within the firm.
Explain the rules of conversion (Passive → Active) with structure:
Passive structure in the given sentence:
· It has been alleged (impersonal passive/reporting structure) + that + clause
· In the clause: confidential data was being leaked by insiders
· Passive pattern: Object + was/were being + V³ + by + Agent
Active conversion:
1. Identify the agent after “by” → insiders (this becomes the subject in active).
2. Identify the object → confidential data (remains object in active).
3. Convert was being leaked (passive) → were/ have been leaking (active continuous) depending on what is retained from the reporting structure.
4. Keep the reporting idea “it has been alleged” by using an adverb like allegedly in active to preserve meaning.
Hence, Insiders have allegedly been leaking confidential data within the firm correctly:
· keeps the reporting sense ( alleged)
· keeps continuity of action ( been leaking)
· places the doer (insiders) as the subject (active voice)
Structure:
· Passive: Object + has/have been + V³ + (that + Object + was/were being + V³ + by + Agent)
· Active: Subject (Agent) + have/has + been + V¹-ing + Object (+ adverb “allegedly” to keep “it is alleged”)
Example (rule used):
· Passive: It is believed that the documents were being forged by someone.
· Active: Someone is believed to be forging / Someone has allegedly been forging the documents.
Why other options are incorrect:
· (a) “Insiders were leaking…” drops ‘has been alleged’ (reporting meaning) and weakens the intended sense.
· (b) Still uses a passive-style framing and is awkward; it doesn’t properly convert to clear active voice.
· (d) Changes meaning wrongly (“firm leaking insider data”) and the object becomes incorrect (“insider data” ≠ “confidential data”).
Information booster / exception:
· Sentences starting with “It is alleged/It is believed/It is said…” are impersonal passive reporting structures.
· In active, we often retain the meaning using reporting verbs (People allege that…) or adverbs (allegedly), as done in option (c).