The objective is to construct a coherent sentence by arranging the provided segments.
Segments:
(A) Over the last few years,
(B) national administrations globally have enacted more stringent environmental rules,
(C) to address the impacts of pollution and climate change,
(D) resulting in greater consciousness and initiatives for sustainability.
Logical Progression:
- Segment (A) sets the temporal context.
- Segment (B) presents the primary action by governments.
- Segment (C) clarifies the objective of these regulations.
- Segment (D) outlines the outcome of these measures.
Assembled Sentence:
"Over the last few years, national administrations globally have enacted more stringent environmental rules to address the impacts of pollution and climate change, resulting in greater consciousness and initiatives for sustainability."
Order: A – B – C – D
Conclusion:
The definitive order is $ {\text{A – B – C – D}} $.