A city council proposes replacing all traditional streetlights with LED lights, arguing this will significantly reduce the city's energy consumption. However, critics argue that the proposal will not achieve the stated goal. Which of the following, if true, most strengthens the critics' argument?

The correct answer to the question "A city council proposes replacing all traditional streetlights with LED lights, arguing this will significantly reduce the city's energy consumption. However, critics argue that the proposal will not achieve the stated goal. Which of the following, if true, most strengthens the critics' argument?" is Option C: A substantial portion of the city's energy consumption comes from public buildings, not streetlights..

The other options — A) LED lights have a significantly longer lifespan than traditional streetlights., B) The cost of installing new LED lights is considerably higher than maintaining existing streetlights., D) Some residents find the light emitted by LED streetlights to be less aesthetically pleasing. — are incorrect for this GMAT Exam Prep question. As explained above: If most of the city's energy consumption is from other sources (like public buildings), then changing streetlights will not significantly reduce overall consumption, thereby strengthening the critics…