Bunuel wrote:

The Internet enables people who are thousands of miles apart to conveniently speak or otherwise contact each other.

A. miles apart to conveniently speak or otherwise contact each

B. miles apart to conveniently speak or otherwise contact one

C. miles apart to conveniently speak to or otherwise contact each

D. miles apart to conveniently speak to or otherwise contact one

E. miles apart to conveniently speak to or make contact with each

Errors..

1) parallelism..

Speak and contact are parallel, so conveniently speak or otherwise contact each other MEANS conveniently speak each other or otherwise contact each other..

This sounds odd..

Correct would be - conveniently speak TO each other or otherwise contact each other.

So - conveniently speak TO or otherwise contact each other.

2) each other Vs one another..

Firstly it gives you only OTHER, so one other is absolutely wrong..

Each other IS between two people, and conversation is being spoken here to be between two people.

One another is between a group of people..

Only C corrects both errors

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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372

2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html

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