Change the following from active to passive: They have been ignoring preservation of the records for years.

The correct passive form of the given sentence is (d). Explanation of conversion: • Tense/Aspect in Active: Present Perfect Continuous — have been ignoring. • Passive construction requires retaining both perfect and continuous aspects. • Structure used: has/have been being + past participle (V³). • Subject–object shift: – Active subject: They → Passive agent: by them – Active object: preservation of the records → Passive subject Thus, the correct passive sentence is: “Preservation of the records has been being ignored by them for years.” Structural comparison: • Active: Subject + have/has been + V-ing + object + time • Passive: Object + have/has been being + V³ + by + agent + time Why other options are incorrect: • (a) had been ignored — Past Perfect; tense changes and progressive sense is lost. • (b) is being ignored — Present Continuous; incompatible with “for years,” which demands a perfect aspect. • (c) was being ignored — Past Continuous; incorrect tense and time reference. Note: Although stylistically heavy, “has been being + V³” is grammatically correct and is the accurate passive equivalent of the present perfect continuous tense when precision is required in exams.