PremisesPremise 1"In Clark County, recent legislation requires that all new homes built with a pool be equipped with door alarms that sound when any door leading to the pool area is opened."
Premise 2"The state legislature claims that this will save lives because parents will be alerted when their children enter the pool area."
Premise 3"However, many homeowner's associations have protested the new law."
Premise 4"The homeowner's associations conclude that few lives will be saved because children are supervised in pool areas over ninety-five percent of the time by their parents."
Conclusion"Few lives will be saved."
The homeowner's associations argue that the alarms will have little effect because children are already almost always supervised.
Which of the following, if true, would most seriously weaken the homeowner's associations' argument?
(A) Many parents have formal training in CPR to resuscitate children that have fallen into a pool and drowned.
Wrong: Knowing CPR helps
after an accident.
The argument is about whether
door alarms prevent accidents in the first place
(B) Since new homes with pools represent a small fraction of the homes in Clark County, the law will be rather narrow in scope.
Wrong: This discusses how many homes are affected.
It does
not show that alarms save more (or fewer) lives.
(C) The cost of the new door alarms is not prohibitive for most new home buyers.
Wrong: cost is not dealt with-
(D) Clark County has an excellent system of emergency medical technicians, all of whom are trained to resuscitate children that have fallen into pools and drowned.
Wrong: similar to A
Emergency medical services act
after the accident.
Door alarms are intended to
prevent the accident.
(E) Most of the deaths that result from a child falling into a pool occur when parents are home with their child but not supervising the child's activities.
Correct: if
most drownings happen precisely during the small percentage of time when parents are home but not watching the child, then door alarms could alert parents during those dangerous moments. So it proves taht the method is valid and weakens the conclusion.