GMAT Critical Reasoning (CR) | Re: A random survey of 1,000 people, all of whom moved over 2,000 miles

Hi experts,
In my 2 cents,the correct option should be A as it casts doubt on the effect of the mobile phone to long-distance relation.It could be that electronic mail is indeed what strengthen the relationships since those who use mobile phone also communicate with their close friends via email.

B is plainly out of scope.

C is also out of scope.The argument is about the long-distance relation;however,this option discuss about the effect of types of communication to the proximate relation.

D
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