For years, doctors have been trying to find a cause for Chronic Fatigue Syndrome (CFS). The devastating illness tends to strike healthy and fairly active individuals with no other history of medical problems or conditions. Recently, doctors in California have found that over 70% of those individuals diagnosed with CFS are infected with a rare enterovirus that is almost never found in the healthy population. As a result, they believe that this enterovirus is the primary cause of many cases of CFS.
Which if the following is an assumption upon which the doctors' theory depends?
A) There are not other viruses that may cause Chronic Fatigue Syndrome.
B) The rare enterovirus was present at the onset of these patients' Chronic Fatigue Syndrome.
C) The laboratory technicians analyzing the presence of the enterovirus in the patients' blood and tissues did not make some mistakes in their analysis.
D) The severity of the symptoms among the patients diagnosed with CFS does not vary widely.
E) The rare enterovirus is commonly seen in patients that are severely ill.
The OA is B.
It is stressful to me solving this CR questions. I need help.
Target Test Prep 20% Off Flash Sale is on! Code: FLASH20
Redeem5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILSThis topic has expert replies
• Page 1 of 1
5/5
5 Star (473 Reviews)
"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."
"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."
"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."
GMAT Course Reviews
Admissions Consulting Reviews
FREE GMAT PREP RESOURCES
GMAT PREP DEAL TRACKER
- ONLY $85
- SAVE $300
- ONLY $99
- $150 OFF
- 50% OFF
- SAVE $75
- 100% OFF