vishalsinghvs08 wrote:
I could be wrong here but Option E is still shaky and holds weaker grounds than option C
Conclusion - owners should repaint walls at least every six months, or cover the walls with a different material to meet safety standards
I could weaken it in multiple ways
1. By saying they can do it in 2 years and not 6 month.>> This is what option C is telling us. That it takes roughly 2 years for the paint to start dissipating into air. Repainting after atleast 2 years is fine, therefore.2. By saying no matter when you do(6 months or 60 month), it may not impact the safety being discussed because there is no safety concern here>>T
his is what option E is telling us. However, i am still not sure of this because its not tied specifically to the conclusion. Amounts of lead that come in contact when? before 6 months(if yes, then please repaint sooner )? after n months(then atleast 6 months is fine)?
My analysis could be wrong and I am open to discuss and learn the correct approach. Thank you
DanTheGMATMan KarishmaB - Experts, please help.
This is what the argument tells us:
The lead seems to rise to the surface of the paint and escape into the building's air supply. Tests show that because of the chemical drying process, the lead is not discernible on the surface until the paint has been on the walls for at least six months.Options (C) vs (E)
We know that the lead rises to the surface and escapes into the building's air supply. It reaches a discernible level (there might still be some before that but the amount would be too small) on the surface in 6 months so it should be controlled at that time and not allowed to escape into the building's air supply. So it should be repainted before that.
C) The amount of lead found on the surface of the paint after six months remained constant for the next two years.
This does not mean that lead is not escaping from the surface. We are given that it escapes. If the amount is constant, it could be that it is constantly being replenished from the lower layers of the paint. With time, more and more lead is reaching the surface (from the lower layers) while it is escaping from the surface at the same rate.
This option does not mean that we can paint after 2 years and that painting within 6 months is not essential.
If an option had given us reason to believe it then you are right, it would have weakened our argument.
Option (E) says that whatever quantity of lead escapes. it is harmless. Then the owners do not need to repaint etc. Hence option (E) weakens our argument.
Answer (E)