What are the 3 revisions of DAO 2000-18?

• A. Updates strengthening ODS controls and phase-out schedules
• B. Increases penalties for violators
• C. Introduces exemptions for medical devices
• D. Reduces reporting requirements

Answer: (A)

The main idea being tested is how regulatory updates to DAO 2000-18 are framed when it comes to ozone-depleting substances. The three revisions are described as updates that strengthen the controls on ODS and tighten or revise the phase-out schedules. This fits because regulations in this area continually get tougher and more precise: they expand and sharpen what substances are controlled, who may import or use them, and how quickly each substance must be phased out. Updating the phase-out schedules ensures the country stays aligned with international commitments and with the latest scientific guidance, while strengthening controls closes gaps and improves enforcement.

That’s why this option is the best fit: it captures the intent of multiple revisions to tighten rules and update timelines for eliminating ODS. The other proposed changes—raising penalties, creating exemptions for medical devices, or cutting reporting requirements—could occur in regulatory updates, but they don’t describe the overarching, consolidated focus of the three revisions, which centers on strengthening controls and updating phase-out timelines.