I'm not sure where you get this part from:
jackie8848 Wrote:Since this article targets those who already decide to undertake do-it-yourself renovation,
How do you know who it's targeting?
Also, isn't the following another assumption:
jackie8848 Wrote: it only tries to demonstrate how to reduce the risk when homeowners renovate the house by themselves instead of trying to persuade them to hire the professionals.
And why is it pointless?
jackie8848 Wrote: one should argue how pointless this article would be in actually reducing the risk for the do-it-yourself owners.
Reducing risk seems like a good point!
The conclusion of this argument is that the journal should run an article for homeowners on how to reduce the risk of lead poisoning when doing a DIY renovation.
Why?
Because homeowners will disregard warnings and do these renovations themselves instead of hire a contractor (who can do it more safely).
This is a weakener question, so what's the gap?
Well, as (C) suggests, maybe printing that article will lead more homeowners to do the job themselves, as they'll think "well, if this journal wrote an article on it, it must be fine to do it."
As for the wrong answers:
(A) is out of scope - what the homeowners know is irrelevant. We know that lead can be released.
(B) is about why folks do jobs themselves. This explains the interest, but doesn't help us weaken the argument that the journal should print an article. If anything, it strengthens it.
(D) is tempting, but it strengthens! This tells us why the article would be useful.
(E) brings in some info that a bunch of people would choose professionals IF the price were the same, but we don't know if the price would be the same! Maybe it's always cheaper to do it yourself.