Free LSAT Practice Question

Question 1 of 1
ID: LSAT-LR-52
Section: Logical Reasoning
Topic: Strengthen
Difficulty level: Medium

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Hydrologist: Over the next fifty years, average sea level along the Mid-Atlantic coast is projected to rise by at least 30 centimeters. Higher coastal water tables will force salty groundwater upward, replacing fresh groundwater in many low-lying farming areas. Therefore, crop yields in those areas will probably decline, and well-water supplies there will become increasingly brackish during the summer growing season.

Which one of the following, if true, most strengthens the hydrologist's argument?

AIn other delta regions where sea level has risen during the past two decades, salinity levels in shallow farm wells have risen sharply, and average crop yields have fallen, after only modest increases in the water table.

BRecent studies show that overall annual precipitation across the Mid-Atlantic states is likely to increase slightly over the next fifty years.

CIn several inland farming districts far from the coast, groundwater salinity fluctuates from year to year, but shows no long-term upward trend.

DSome salt-tolerant crop varieties can maintain normal yields even when irrigated with moderately brackish water.

EFarmers in parts of the Mid-Atlantic have recently begun lining irrigation ditches with plastic to reduce seepage losses.

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