A proposed ordinance requires the installation in new homes of sprinklers automatically triggered by the presence of a fire. However, a home builder argued that because more than ninety percent of residential fires are extinguished by a household member, residential sprinklers would only marginally decrease property damage caused by residential fires.
Which of the following, if true, would most seriously weaken the home builder’s argument?

Question

Examsnet · Accepted Answer

Correct Answer is :  The largest proportion of property damage that results from residential fires is caused by fires that start when no household member is present.

GMAT Verbal Reasoning Practice Test 4