Museums that house Renaissance oil paintings typically store them in environments that are carefully kept within narrow margins of temperature and humidity to inhibit any deterioration. Recent laboratory tests have shown that the oil paint used in these paintings actually adjusts to climatic changes quite well. Assuming paint to be the most sensitive substance in these works, some museum directors now argue that museums can reduce energy costs without risking damage to these paintings by relaxing the standards for temperature and humidity control. Museums would be rash to relax those standards, however, since results of preliminary tests indicate that gesso, a compound routinely used by Renaissance artists to help paint adhere to the canvas, is unable to withstand significant variations in humidity.
In the argument above, the two portions in boldface play which of the following roles?The museum directors use the first boldface statement as evidence that relaxing climate controls may be safe. The argument then challenges that position by pointing to the second boldface statement: gesso, another important substance in the paintings, may be damaged by humidity changes.
So the first boldface supports the view being rejected, while the second is
evidence used to weaken that support.
(A) The first is evidence that has been used to support a position that the argument calls into question; the second is that position.
This is incorrect. The second boldface is not the position being questioned. The questioned position is that museums can safely relax the standards.
(B) The first is evidence that has been used to support a position that the argument calls into question; the second is a claim, the accuracy of which is questioned in the argument.
This is incorrect. The argument does not question the accuracy of the second boldface statement. It uses that statement as support.
(C) The first is evidence that has been used to support a position that the argument calls into question; the second is a preliminary finding used by the argument to weaken the force of that evidence.
This is correct. The first boldface supports the museum directors’ position that relaxed standards would be safe. The second boldface weakens that support by showing that even if oil paint adjusts well, gesso may not.
(D) The first is the main conclusion of the argument; the second is a preliminary finding used by the argument to weaken the force of evidence that has been used to support a position that the argument calls into question.
This is incorrect. The first boldface is not the main conclusion. The main conclusion is that museums would be rash to relax the standards.
(E) The first is an objection that has been raised against the position taken by the argument; the second is that position.
This is incorrect. The first boldface is evidence for the opposing position, but the second boldface is not the argument’s main position. It is support for that position.
Answer: (C)