Given below are four jumbled sentences. Select the option that gives their correct order forming a meaningful and coherent paragraph.
A. Rising temperatures and drought conditions have caused serious problems for human populations all over the world.
B. One area particularly affected by drought has been the central Spanish province of Caceres, where water levels in the Valdecanas reservoir have dropped nearly 30%,
C. Some dramatic changes in landscape brought on by lowering water levels, though, have also led to a number of notable discoveries.
D. As a result, a fascinating site from near pre-history has been recovered here, as per Reuters.

Correct option is C

Option (c) ACBD is the correct order of the given sentences.
Explanation:
· Sentence A introduces a broad issue of rising temperatures and drought conditions affecting human populations globally, setting a thematic stage.
· Sentence C then connects to A by discussing specific consequences of the lowering water levels, which includes dramatic changes in landscapes and discoveries.
· Sentence B narrows the focus further to a specific example, the province of Caceres in Spain, detailing the impact of drought mentioned in A and C.
· Sentence D follows up on the discoveries mentioned in C by detailing a specific discovery of a pre-historic site due to the conditions described in B.
This sequence ACBD logically flows from a general introduction of a global problem to specific consequences, further zooming into a particular location and culminating in a specific example of a discovery.