Studies indicate that the rate at which water pollution is increasing is leveling off: the amount of water pollution causes this year is almost identical to the amount caused last year. If this trend continues, the water pollution problem will no longer be getting more serious.
stimulus: states that the rate at which the water pollution is increasing is leveled off the level of water pollution this year is same as last year in future we will no have to worry about water pollution.
if water pollution has cumulative effect then same pollution as last year would mean that the pollution has doubled,
eg: last year pollution was 10 and this year is is 10 cumulative effect would be 20. IMO E
The reasoning is questionable because it ignores the possibility that
(A) some types of water pollution have no noticeable effect on organisms that use the water
(B) the types of water pollution caused this year are less dangerous than those caused last year
(C) the leveling-off trend of water pollution will not continue
(D) air and soil pollution are becoming more serious
(E) the effects of water pollution are cumulative