Joined: 29 Jul 2009
[, given: 0] 2
I'm not sure if I understand choice D correctly. from what I understood, it says that the rate of new cases is usually high among residents who get their water from private sources.....right??
I'm not sure if I understand the (not unusually high)
so although the residents dont drink water from the polluted water, the rate is high...that weakens the argument
so why the correct answer is C?
Q19-CR.jpg [ 91.62 KiB | Viewed 1881 times ]
Manhattan GMAT Instructor
Joined: 27 Aug 2009
Location: St. Louis, MO
Schools: Cornell (Bach. of Sci.), UCLA Anderson (MBA)
[ , given: 1] 6
This post received
"Not unusually high" roughly means "normal" or possibly "relatively low."
For example, if we hear "the temperature today is not unusually high for this time of year," it means today's temperature is in the normal range.
Emily Sledge | Manhattan GMAT Instructor | St. Louis Manhattan GMAT Discount | Manhattan GMAT Course Reviews | Manhattan GMAT Reviews
Joined: 17 Aug 2009
[, given: 0] 25
only choice C mentions that water may not be the cause of the infection as people were having the infection before the water became polluted.
Hope this helps Consider kudos for the post
Status: Trying to get 720+ - DIDN'T GIVE UP !!
Joined: 24 Aug 2011
Concentration: Entrepreneurship, Finance
GMAT 1: 600 Q48 V25 GMAT 2: 660 Q50 V29
WE: Engineering (Computer Software)
[, given: 0] 165
Didn't give up !!! Still Trying!!
Verbal Forum Moderator
Status: Flying over the cloud!
Joined: 16 Aug 2011
Location: Viet Nam
Concentration: International Business, Finance
[, given: 0] 35
Choice D states that people who use water from private source (that mean this source of water is not contaminated by pollutants) do not normally get the disease. => strengthen.
Rules for posting in verbal gmat forum, read it before posting anything in verbal forum Giving me if my post is valuable with you + 1 kudos
Joined: 21 Sep 2011
Concentration: Entrepreneurship, General Management
GMAT 1: 530 Q42 V20 GMAT 2: 540 Q43 V28 GMAT 3: 680 Q48 V35
WE: Business Development (Hospitality and Tourism)
[, given: 0] 18
C - weakens and all other options support the argument.
KUDOS - if my post has helped you.
WaterFlowsUp, tuanquang269, Marcab, rajeevrks27, mikemcgarry, Vercules, RaviChandra, pqhai, dentobizz, MacFauz, carcass, PTK, mau5, souvik101990, Narenn