Convert the sentence provided below from its passive voice structure to an active voice structure: It was being reported by several sources that the mission had been compromised internally.

The correct active form of the given sentence is (a). Explanation of conversion: • Identify the agent in the passive sentence: by several sources → becomes the subject in active voice. • Match the tense/aspect: was being reported (past continuous passive) → were reporting (past continuous active). • Retain the that-clause content: that the mission had been compromised internally remains unchanged because it already represents a completed action prior to the reporting. • Remove the dummy subject It, which is common in passive reporting structures. Thus, the correct active sentence is: “Several sources were reporting that the mission had been compromised internally.” Structural comparison: • Passive: Dummy It + was being + V³ + by + agent + that-clause • Active: Agent (subject) + were + V-ing + that-clause Why other options are incorrect: • (b) Creates a comma splice and alters emphasis; it is not a faithful active transformation. • (c) Uses an awkward noun phrase and loses the precision of the original that-clause. • (d) Reverses the meaning by making the mission the agent, which contradicts the original sentence