【正确答案】 D

【答案解析】Parallelism; Rhetorical construction
The sentence lists three factors that have increased pressure on water resources and expresses concern for future water supplies in arid regions. The preposition both creates confusion since it indicates two factors, when the sentence actually lists three. If expanding development and changes in climate are supposed to be grouped together—implausibly—as a single factor, they should be conjoined by and, not separated by commas. The sentence could be constructed most clearly by listing all three factors in parallel form as objects of the preposition from: from expanding development, changes in climate, and pollution.
A The preposition both creates confusion since it indicates two factors, when the sentence actually lists three.
B Both indicates that there are two factors. If the entire disjunction expanding development or changes in climate is intended—somewhat implausibly—to be the first of the two factors, the comma before and pollution makes its relationship to the preceding portion of the sentence unclear.
C Repetition of the preposition from disrupts the parallelism of the list and makes the meaning unclear.
D Correct. The three factors are listed in parallel form as objects of the preposition from.
E Repetition of the preposition/row disrupts the parallelism of the list and makes the meaning unclear. Future somewhat implausibly modifies concern rather than supplies.
The correct answer is D.