Rearrange the following four sentences (A), (B), (C), and (D) to form a coherent paragraph.
A. Consequently, the focus has shifted from mere sustainability—maintaining the status quo—to regeneration, which aims to actively restore and enhance ecological systems.
B. Humanity's impact on planetary systems has reached a critical threshold, prompting a reassessment of our relationship with the natural world.
C. This paradigm shift acknowledges that simply reducing harm is insufficient; a more proactive, restorative approach is urgently required.
D. The concept of 'ecological overshoot' highlights that our resource consumption and waste generation far exceed Earth's regenerative capacity.
Correct: A
Sentence B introduces the broad problem of humanity's critical impact on planetary systems, making it a good opener. Sentence D, 'The concept of 'ecological overshoot'', provides specific evidence or an explanation for *why* this impact is critical, linking directly to B. So, B-D forms a strong pair. Sentence A, 'Consequently, the focus has shifted from mere sustainability...', describes a direct consequence of the critical situation explained in B and D: a shift in environmental philosophy. Sentence C, 'This paradigm shift', refers to the shift mentioned in A (from sustainability to regeneration) and explains its justification. Therefore, B-D-A-C creates a clear logical flow from problem to evidence, to a new approach, and finally to its rationale.