Pollution is a problem wherever there are people who are indifferent to their environment, and nature's balance is ha...

Ryan on December 15 at 03:04PM

Why is A correct? Why is D incorrect?

Thanks

1 Reply

Ben on December 17 at 09:33PM

Hi Ryan, thanks for the question.

We need to parallel the conditional reasoning in this short passage. The conditional diagrams in this passage look like this:

Premise 1: People who are indifferent to their environment - > pollution is a problem (A - > B)

Premise 2: Pollution - > Nature's balance is harmed (B - > C)

Conclusion: People who are indifferent to their environment - > Nature's balance is harmed (A - > C)

Now let's find the answer choice which parallels this reasoning.

Answer choice A does the exact same:

A - > B and B - > C, therefore, A - > C

Answer choice D on the other hand does the following:

A - > B and B - > C, but then it incorrectly (and most importantly, differently) concludes the following, therefore C - > A. It reverses the conditional diagram.

I hope this helps. Please let me know if you have any other questions.