iMyself
A researcher discovered that people with higher incidences of physical illness also tend to be prone to depression. From this, the researcher concluding that being sick physically contributes to being sick mentally.
The researcher’s conclusion relies on which of the following assumptions?
A. People who are rarely physically ill have fewer mental health issues.
B. Physical illness and mental illness have the same detrimental effects on a person.
C. People who are often depressed are more likely to develop serious physical ailments.
D. Depression does not weaken a person’s immune system and make one more susceptible to physical illness.
E. It is easier to treat physical illnesses than it is to treat mental illnesses.
Source: McGraw-Hill's GMAT
the answer should be D
this is an causal argument in which conclusion states that( being sick physically contributes to being sick mentally) so we can say x causes Y but the vise-versa is not true , the pre thinking assumption could be 1. that y does not causes X.
A. this is totally o/s and also the word rarely is extreme . not correct
B. here the effects of both the illness are the same which can not be true and also if the effects are the same the the vise-versa must be true . not correct
C. o/s we are not told about the serious ailments. not correct.
D. after negating we can cay that vise-versa is not true which matches to out assumption. CORRECT.
E. o/s also we are not concerned about the treatment.
hope that makes sense
thanks.