Hi nusmavrik-- yes, although i'm not sure what you mean by "contradiction", you seem to have understood the problem with B and D.
Regarding C, I forgot to mention one more grammatical note! Always, when the words after the underlined portion are descriptive, whatever those words describe must be the last word in your answer. Thus, only an answer ending with "antipodes" can be correct.
papillon86 wrote:
papillon86
Hi papillon86, your question plagues many GMAT students! The"it" in red refers to Australia.
There are two ways to use "it".
1) "It" can be used a general subject that only acts as a place-holder and does not refer to anything.
Ex. It is raining. / It is cold outside. / It was nice of you to come. / It is the red pen, not the black pen, that I want.
Compare those sentences to the following: "If you read every day, it will help you on the exam." This sentence is INCORRECT. Can you tell why? When you say, "It will help you," you mean that there is SOMETHING that will help you. The 'something' is the referent that must appear in the sentence for the sentence to be correct. In the sentence, "it is raining," there is no THING that is raining. "It" here is just holding the place of subject since English demands that every verb have a subject.
So you just have to ask yourself whether there is a THING that
does the verb whose subject is "it". If there is no THING, then you don't need a referent.
Let me know if this is still confusing to you.
Best,
Sarai
If this helped, kindly give Kudos!