Animal feed should not include genetically modified plants. A study found that laboratory rats fed genetically modifi...

Aidyn on May 28 at 06:13PM

A instead of E?

Why is this A instead of E

1 Reply

Victoria on May 28 at 09:40PM

Hello @Aidyn-Carlson,

E is incorrect because it is irrelevant to the argument. The passage concludes that animal feed should not include genetically modified plants and cites the study on laboratory rats as evidence to support this conclusion. It does not matter whether the researchers could explain their results or not. Science often provides results which cannot entirely be explained by researchers. In addition to this, the passage states that the negative conditions included by the genetically modified potatoes are sufficient evidence to support the conclusion that animal feed should not contain genetically modified plants; it does not matter how the genetic modifications caused the intestinal deformities or weakened immune systems, nor does it matter if the researchers can explain why this might be the case. What matters is that these negative conditions appeared to be caused by the rats' consumption of the genetically modified potatoes.

A is the correct answer because it provides an alternate explanation for why the laboratory rats who were fed genetically modified potatoes developed intestinal deformities and a weakened immune system, and the rats who were fed the normal diet did not. If potatoes are not a normal part of the diet of laboratory rats, then the laboratory rats who were fed the regular diet may not have consumed potatoes and the laboratory rats who were fed the genetically modified potatoes may have developed these conditions because of the introduction of a new food into their diet, regardless of whether it was genetically modified or not.

Hope this is helpful! Please let us know if you have any further questions.