tinbq
Hi experts,
Please help to explain why each option is right or wrong. Thanks
Hey there. Here was my thinking as I went through the problem
First I read the question:
Quote:
Which one of the following is most strongly supported by the information above?
This question tells me I am drawing an
inference from the passage. (That is, I won't be dealing with an argument).
So I read the passage carefully.
Quote:
Clothes made from natural fibers such as cotton, unlike clothes made from artificial fibers such as polyester often shrink when washed at high temperatures. The reason for this shrinkage is that natural fibers are tightly curled in their original state. Since the manufacturer of cloth requires straight fibers, natural fibers are artificially straightened prior to being made into cloth. High temperatures cause all fibers in cloth to return to their original states.
Okay, so, I realized the passage was drawing a distinction between clothes made with natural fiber and clothes made with artificial fibers.
High level:
In heat, natural fibers SHRINK. Artificial Fibers DON'T.
Then I get some explanation as to WHY.
Basically: natural fibers are STRAIGHTENED to make clothes, and HEAT reverts them (in fact, reverts ALL FIBERS) to their ORIGINAL STATE.
Before I thought harder about this, I already had a sense of what the answer would go for. It was probably going to be something about the original state of artificial fibers.
So I noticed a few things. We're told natural fibers are STRAIGHTENED to make cloth (but we aren't told whether artificial fibers are straightened or not).
But heat causes ALL FIBERS (natural AND artificial) to revert to their original state. This is, evidently, why natural fibers SHRINK but artificial fibers DON'T. So, the original state of natural fibers must be 'shrunk,' and the natural state of artificial fibers is NOT shrunk. And yet, the heat should revert even artificial fibers to their 'natural state.' So, if they are IN their natural state but NOT shrunk, their natural state must be STRAIGHT.
So I didn't even read the other answers, I just found that answer in E and chose it.
Now as to why the wrong answers are wrong:
Quote:
(A) Washing clothes made from natural fibers at low temperatures causes the fibers to straighten slightly.
I can infer nothing about washing at low temperatures. The passage only gives me information about high temperatures.
Quote:
(B) High temperatures have no effect on the straightness of fibers in clothes made from a blend of natural and artificial fibers.
This contradicts what's in the passage, as high temperatures cause natural fibers (whether they are in a blend or not) to return their natural state (which is un-straightened).
Quote:
(C) Clothes made from natural fibers stretch more easily than do clothes made from artificial fibers.
No idea about stretchiness. Could not infer that from anything given.
Quote:
(D) If natural fibers that have been straightened and used for cloth are curled up again by high temperatures, they cannot be straightened again.
There's nothing in the passage that let's me infer that the re-curled natural fibers could not be re-straightened.
Quote:
(E) Artificial fibers are straight in their original state.
This is the right answer!