LSAT Question Explanation
PT 108, Section 3, Question 5
Identify the FlawArgument structure
Oxygen-removing refrigerators will be cheaper than current models in the long run.
Oxygen-removing refrigerators don't need to be kept as cold as current models, so they reduce energy costs.
Explanation
This argument displays the flaw of making the conclusion that the new fridges will be overall cheaper without considering all costs.
If the oxygen-removing refrigerators are wildly expensive to install or need frequent expensive repairs or updates, for example, they may not be cheaper despite lower energy costs.
Answer choices
The argument never addresses how expensive the new technology will be to implement. This answer choice points out that lower energy costs may never make up for the potentially high production/installation costs of the oxygen-removing refrigerators.
This has nothing to do with which type of refrigerator will be cheaper.
This also has nothing to do with the costs of the refrigerators.
This doesn't point out that the new refrigerators may not be cheaper. It says the new refrigerators keep food from perishing almost indefinitely, so it's not like you'd be losing money from throwing away food that would stay fresh in a normal refrigerator.
This is irrelevant to making a conclusion about which type of fridge will be cheaper.