Abhimanyu,

Our bold face concepts are available in our free trial. We detail out the strategies to approach these questions and solve multiple questions in a guided fashion for you. just register at https://e-gmat.com/secure/register.php . You will also find 15+ exercise problems to practice from.

Regards,

Rajat

i received a private message regarding this problem.

you can watch my free online lecture about this topic at the following link:
https://www.manhattangmat.com/thursdays-with-ron.cfm
the archive lectures are posted at the bottom of the page; scroll down (or use your browser's search function) until you find the lecture on boldface problems. it should be from april of 2010.

in brief:

* your primary line of attack on these problems should be to ignore the answer choices and PREDICT the answer yourself.
in general, this is the only type of question on cr for which there is only one possible correct answer -- because each statement in the passage generally has only a single role to play -- so, if you understand the argument completely, you should ideally be able to produce the answer to this kind of question without needing multiple choices.

if you don't have a sufficient understanding of the argument to predict the answer cold, then you can try one or both of the following backup approaches:
1) decide which side of the overall argument each boldfaced sentence is on (i.e., for or against the overall argument -- be sure not to confuse the overall argument with any included counterarguments when you make this decision), and then eliminate any answer choices that place either of the boldfaced statements on the wrong side of the argument.
2) decide whether each boldfaced statement is a FACT or a CLAIM; then, if any of the answer choices contain words that imply either a fact or a claim, then eliminate those choices that carry the wrong implication.

for more details about these approaches, please check out the lecture.