Enhancing understanding and inference in CR

Hello

I have decent accuracy in CR, however I face problems while solving high level CR questions mainly because while I am trying to understand the complicated question and then connecting the information to find the right answer, either i take too much time, or i just end up getting it wrong.

For example in a question like this
Although fullerenes - spherical molecules made entirely of carbon - were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.
Which of the following, if true, most seriously undermine the argument?

A. Confirming that the shungite genuinely contained fullerenes took careful experimentation
B. Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft
C. The mineral shungnite itself contains large amount of carbon, from which fullerenes apparently formed
D. The naturally occurring fullerenes are arranged in a previously unknown crystalline structure
E. Shungite itself is only formed under distinctive conditions

I took so much time to conclude that i need to find something which proves that naturally occurring fullerene and synthetic fullerene differ in their structure.

Someone please help me as to how can i understand complicated question stems and simplify the same in order to get the right answer.
I have 30 days to go for GMAT

Thanks in advance