Don’t lose your progress!

We cover every section of the GMAT with in-depth lessons, 5000+ practice questions and realistic practice tests.

Up to 100+ points GMAT score improvement guarantee

The best guarantee you’ll find

Our Premium and Ultimate plans guarantee up to 100+ points score increase or your money back.

Master each section of the test

Comprehensive GMAT prep

We cover every section of the GMAT with in-depth lessons, 5000+ practice questions and realistic practice tests.

Schedule-free studying

Learn on the go

Study whenever and wherever you want with our iOS and Android mobile apps.

The most effective way to study

Personalized GMAT prep, just for you!

Adaptive learning technology focuses on your academic weaknesses.

Critical Reasoning: Conclusion Weakening Questions

The spokesman for the Ministry of Transport announced that the ministry has decided to pave roads with underground wiring as an alternative to spreading salt on the ice- and snow-covered roads. However, an official in the Ministry, who opposes the Ministry’s decision, was quoted saying that due to the high initial costs, the project cannot be cost-effective .

Which of the following, if true, most weakens the official's objection to the Ministry’s decision?

Correct!

[[snippet]]

This answer choice attacks the argument's assumption by showing that a third of the Ministry budget can be saved if the underground wiring is installed in roads. By doing so, the new system isn't just a waste of money - it also saves a fortune spent on road maintenance, a fact which weakens the officials objection.

Incorrect.

[[snippet]]

This answer choice neither weakens nor strengthens the official's position as it does not discuss the cost of the project and its effectiveness in relation to that cost. The underground wiring system may be effective but if it costs too much it's not cost-effective.

Incorrect.

[[snippet]]

This answer choice neither weakens nor strengthens the official's position as it does not discuss the cost of the project, only its importance. According to this, either underground wiring in roads or spreading salt would do, as long as the roads are clear of ice.

Incorrect.

[[snippet]]

This answer choice supports the official's view by confirming the assumption that the underground wiring system does not save in expenses. If the roads still need salt to be cleared of ice, the underground wiring system is indeed wasteful. However, you were required to weaken the official's view rather than strengthen it.

Incorrect.

[[snippet]]

This answer choice actually strengthens the official as it states that the price of electricity is rising. This makes the option of wiring roads more expensive. However, you were meant to weaken the official's objection by showing that the wiring system is not as wasteful as the official claims it to be.

Wiring roads has proved to be an effective means of preventing the accumulation of snow.
Recent surveys indicate that ice-covered roads are the number one cause of car accidents in the winter.
Last year, the Ministry of Transport spent a third of its budget on winter road maintenance in fuel, salt and personnel.
Several countries, which have already wired their roads, still use salt as an additional measure.
The price of electricity, on which the underground wiring system runs, has been increasing steadily over the past ten years.