In this not-so-tricky sentence but still nasty, it shows us how important it is to understand deeply the meaning of the sentence and not only the clues in it.

Please, consult my guide to get all these nuances on TC and SE https://gre.myprepclub.com/forum/gre-te ... 33604.html

As always , the best strategy is to divide the sentence into chunks.

The operational structure of the collective of computer infiltrators is characterized by an extremely (i) _______ command-a decentralized arrangement that explains why, when authorities succeeded in apprehending and neutralizing several high-profile operatives, the organization (ii) _______ .

The operational structure of the collective of computer infiltrators - I do not know what is this but I assume the sentence is talking about some sort of group of people which has a peculiar feature: it is extremely _____ command.

In the first blank, we do have
A. amorphous
B. efficacious
C. stratified

Starting your process of elimination. One blank is always clearly off. I would say C is not suitable in this context because a decentralized arrangement means the organization has not a clear center or focus. It could be stratified but I have serious doubts on it. Moreover, for the rest of the sentence, it is clear that I and II must be aligned. They must be on the page.

For now, keep going with the rest of the sentence.

Far from dissolving, the group persists in its activities, often operating under varying designations.

The group is elusive, regardless the when authorities succeeded in apprehending and neutralizing several high-profile operatives.

Now a lot of things start to be more clear. Even though we are far from the first blank and the initial part of the sentence, the fact that the group is elusive and re-create itself in a different yet similar manner suggests to us that it is not of a regular shape. He has an idiosyncrasy to it . Therefore, the group is amorphous and because it is flexible, the group, when attacked and disorganized, almost immediately rebounds, transforming itself into another shape. Therefore, the second blank must be F. underwent a swift leadership reconstitution

The group did not have a demise because it rebounded, and D. adopted a different organizational paradigm because it just mutated into something different but equal to its scope. NOT is a complete different thing as before


These names, like the membership itself, are ultimately (iii) ________ : any individual, irrespective of location, is permitted to conduct actions while sheltered by its anonymity.

Now the big picture is almost complete: any piece of the group is interchangeable otherwise, we cannot have all we said before: flexible, mutation, and amorphous

The final answers are A, F, and H