Using computer techniques, researchers analyze layers of paint that lie buried beneath the surface layers of old paintings. They claim, for example, that additional mountainous scenery once appeared in Leonardo da Vinci’s Mona Lisa, which was later painted over. Skeptics reply to these claims, however, that X-ray examinations of the Mona Lisa do not show hidden mountains.
Which of the following, if true, would tend most to weaken the force of the skeptics’ objections?

Question

Examsnet · Accepted Answer

Correct Answer is :  Analysis relying on X-rays only has the capacity to detect lead-based white pigments in layers of paint beneath a painting’s surface layers.

GMAT Verbal Reasoning Practice Test 3