Interesting questions,
WaltGrace1983 and
syc4ey!
WaltGrace1983 , remember that arguments are often flawed simply because they assume things. So, when trying to identify a flaw, we're essentially trying to identify assumptions in the argument.
Notice the wording at the beginning of each answer choice.
(A) and
(B) both start with "It takes for granted that" - that's just another way of saying "the argument assumes". So, what follows that phrase should be a necessary assumption of the argument. We should be able to use the negation test to check these.
(C),
(D), and
(E) all begin with "It ignores the possibility that". When arguments assume things, they ignore the possibility that the assumption might not be true. So, what follows this phrasing can be thought of an an already negated necessary assumption. In other words, it brings up the 'what if' scenario that destroys the link between premise and conclusion.
I like your thought of
Do I think to myself, "okay I am looking for answers that, even given the premises, the conclusion does not result?"
I like to find assumptions by asking myself how I could live in a world where the premises were all true, but the conclusion didn't happen. That will show me the 'what if' scenario that destroys it, and from there I can see the assumption that is being made.
This argument is presented in dialogue, which makes it slightly more difficult to parse, but
elizabeth.r.casanova began a very good breakdown. Here's the simplified core:
PREMISES:
Congleton assigned awesome people to the project.
Witness knows this.
CONCLUSION:
Congleton must not have wanted the project to fail.
Witness must have lied in saying otherwise.
But it's possible for Congleton to assign awesome people and still want the project to fail - if that were true, it would destroy this argument. It's also possible that Congleton wanted the project to fail but the Witness did not know/understand that - if that were true, it would destroy the argument that the witness lied.
So, the Lawyer is assuming:
1) if Congleton assigned the best people, she could not have wanted it to fail
2) the Witness knew and understood that.
(D) targets assumption #2. What if the Witness is an idiot, and genuinely believes Congleton wanted the project to fail even if all the evidence suggests otherwise? If that were true, then the Witness wouldn't be
lying, he'd just be wrong.
(A),
(C), and
(E) all target the first assumption:
(A) What if she was forced to assign these awesome people? Then those assignments aren't evidence of whether she wanted the project to fail!
(C) offers a nefarious reason for assigning these awesome people - yes, they are individually awesome, but what if Congleton knew they would work terribly together? If that were true, then it's possible that she actually wants the project to fail, despite assigning awesome people!
(E) reminds us that assigning awesome people is not the only way to influence the success of a project. What if Congleton assigned awesome people, but sabotaged the project in other ways, like time/resources? If that were true, then it's possible that she could want the project to fail!
(A),
(C), and
(E) target a number of ways Congleton could still want the project to fail, even though she's assigned awesome people to it.
That leaves only
(B), a conditional statement that translates as:
If project could fail then Congleton wanted it to fail. But nothing in the stimulus actually discusses the project failing! We don't know if it did fail, didn't fail, could have failed, couldn't have failed, will fail in the future - we know none of that! We only know that Congleton assigned awesome people and the Witness knew that.
This answer would be the assumption/flaw for an argument that said:
The project failed, therefore Congleton must have wanted it to fail. But that's an entirely different argument!
So,
(B) is a flaw for some other argument, but not this one!
I hope this helps clear up a somewhat unusual question!