Studies have shown that treating certain illnesses with treatment X produces the same beneficial changes in patients'...

Matthew on January 15, 2015

Weaken

Why is E not the right answer?

1 Reply

Melody on January 15, 2015

The conclusion of the argument is: "treatment X should be preferred to treatment Y."

Why? Because studies have shown that treating certain illnesses with treatment X produces the same beneficial changes in patients' conditions as treating the same illnesses with treatment Y. And, treatment X is quicker and less expensive than treatment Y.

We are being asked to weaken the argument.

Answer choice (E) states "A third treatment, treatment Z, is even quicker and less expensive that treatment X."

Regardless of Z possibly being a better treatment, that has no effect on our argument that is trying to prove that X is better than Y. It is besides the point whether there are better treatments than X. We just want to know whether X is preferred to Y.

Hope that clears things up! Please let us know if you have any other questions.