CAT 3, Question 10 (Integrated Reasoning)

[JbhB682]

Hi - attached is the image of the question : https://s3.postimg.org/5o8ddu8bn/May_30th.png

Source : CAT 3, Question 10 (IR section)

Argument : Considering this initial success, DSSCs are going to be the most useful form of solar cell technology.

For the assumption required part,

--- why is A not an assumption needed ......in order to the be the most useful form, would'nt properties like "Low Production Cost | High efficiency" be needed to prove its the most useful form of solar cell technology

-- Any tips of how students should think about " assumption needed " for the argument vs. fact needed to strengthen the argument

Thank you

OA :

Column 1 : E
Column 2 : A

[RonPurewal]

remember what "assumption" means.
an "assumption" is something that NEEDS to be true FOR the argument to WORK.

alternatively, you can phrase this in terms of negation:
an "assumption" is something that, if NOT true, INVALIDATES the argument.

these things certainly don't describe choice A!

• first, there's that whole business about "six solar technologies".
why six?
the argument mentions no other specific solar technologies at all -- let alone such a specific number. this is just weird; it's made up completely at random, and most certainly does not NEED to be true.

• ...and the second part -- "DSSCs ARE the least expensive and the most efficient" -- is almost certainly FALSE right now
just think about it -- basically the entire passage is about possible ways to make these things MORE efficient IN THE FUTURE. if this is a major concern, then, they must not be too amazingly efficient at present.
in other words, this part of the statement may represent a FUTURE GOAL for this technology -- but, RIGHT NOW, it's almost certainly false.
since this statement probably isn't even true, there's no way it's REQUIRED for the argument.

[RonPurewal]

also, please familiarize yourself with the forum rules before posting.
specifically, you must post every question in its entirety, AND indicate the correct answer to the question.

we can't discuss this question any further until you do this. (and i shouldn't even have posted the foregoing discussion, but, i'm feeling nice today.)

thanks.

[JbhB682]

Thanks Ron ..Edited to have the posted OA answers on top

Also the question is shown in the image in its entirety

Question on column 2 : Why is option D or E not an option in column 2 ...
(D) : No other nanoparticles are as efficient as titanium dioxide.
(E) : A conversion efficiency under air mass irradiation of 11% is considered above average

Why are these wrong over A as possible facts that will strengthen the argument