Sentence Correction

Spend almost 2 hrs to find a common strategy but could not find one.

Following are 3 ques. & 1 MGMAT strategy. Experts please help us find one strategy for
GREATER vs MORE
INCREASE vs GREATER
LESS vs LOWER


MGMAT strategy : Increase express the change of one thing over time. Greater signal a comparison between two things


1. Even though the direct costs of malpractice disputes amounts to a sum lower than one percent of the $541 billion the nation spent on health care last year, doctors say fear of lawsuits plays a major role in health-care inflation.
(A) amounts to a sum lower
(B) amounts to less
(C) amounted to less
(D) amounted to lower
(E) amounted to a lower sum
THE CORRECT ANSWER IS "C"

2. The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970's. .
(A) extinction; its numbers are now five times greater than
(B) extinction; its numbers are now five times more than
(C) extinction, their numbers now fivefold what they were
(D) extinction, now with fivefold the numbers they had
(E) extinction, now with numbers five times greater than
THE CORRECT ANSWER IS "A"

3. Although the government's expenditures on law suits involving tobacco companies amounts to a sum dramatically lower than that spent by tobacco companies, many believe that the government should allocate no more funds to a battle they perceive as pointless.
a) expenditure on law suits involving tobacco companies amounts to a sum dramatically lower than
b) expenditures on law suits involving tobacco companies amount to a sum dramatically less than
c) expenditures on law suits involving tobacco companies amount to a sum dramatically lower than
d) law suit expenditures regarding tobacco companies amount to a dramatically lower sum than
e) law suit expenditures against tobacco companies amounts to a sum dramatically lower than
THE CORRECT ANSWER IS "C"