abhasjha Wrote:Compared to those who do not, running three days a week saves an average of 14.1 percent on health-care costs each year in the United States.
A. Compared to those who do not, running three days a week saves
B. Compared with nonrunners, people who run three days a week save
C. Compared to not running, those running for three days a week save
D. When compared with those who do not, people running three days a week save
E. When compared to nonrunners, running three days a week saves
this problem involves a COMPARISON.
comparisons must be EXACTLY and LITERALLY PARALLEL.
(a) isn't parallel: it compares people ("
those who do not...") with running itself.
(c) isn't parallel: it compares "not running" with people ("those running for...")
(e) isn't parallel: it compares people "nonrunners" with running itself.
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(d) and (e) also misuse "when".
you cannot use "when" unless you are literally talking about the timeframe in which an event takes place.according to (d) and (e), these savings are only realized
when someone is
actually making the comparison. (i.e., only when someone else is looking at the statistics, comparing them, do these people actually save money!)