1.out of scope
2.correct since they could not collect tax from corporation by putting fines
3.time is not a matter of concern
4.there are other methods also
5.% for indivisible and corporation is very different indivisiual may have in thousands as corporations have in lacks

B is correct, just negate B, entire argument will become invalid

Argument is simple and answer choices are simple too. We do not spend a lot of time to understand argument and answer choices as the case with long and complex argument.

However, this is hard. Unlike SUPPORTER ASSUMPTION, which can be realize when we read answer choices, DEFENDER ASSUMPTION is hard to realize and so requires us to negate each answer choice to find the defender assumption. This process of negation takes more time than the process of finding supporter assumption.

Mode to tack : for assumption question, when we finish reading 5 answer choices and see nothing, it is defender assumption question and we have to think of negation of each answer choice.

logic of CR is simple to understand the explanation. But the problem is that we find out the method of attacking for each kind of question so that we do not miss the hard questions next time. I wish you to share your ideas. I am highly interested in discussion of gmatprep questions because gmatprep is official source of hard questions.

the concept of defender assumption and supporter assumption is developed in CRITICAL REASONING BIBLE book. you can get it in a 1 hour of reading.

IMO B, D is extreme!

members, pls, discuss

it is clear that B is correct. But I want to discuss why many persons choose D. in fact, D makes me uncomfortable.

I see many questions in gmatprep, which contain answer choice like D and which makes me uncomfortable.

The test maker fully understand that he/she make us hard with D and I want to understand the way test maker make D. I want to know clue/method to realize the wrongness of D so that next time we can be easy with D.

D makes us think that negation of D weakens the argument but the negation dose not. Is this what the test maker want?