An antitheft device involving an electronic homing beacon has been developed for use in tracking stolen automobiles. ...

Irina on July 30, 2019

@Christine-Tara,

Let's look at the argument.

The presence of the antitheft device is undetectable to a car thief, but its use greatly increases the odds of apprehending even the most experienced car thieves.
The device is used by a small percentage of car owners.
Thefts have dropped dramatically.

Which one of the following helps explain the dramatic impact of the device?

(E) tells us that in most cities car thefts are committed by a few very experienced car thieves. The fact that the device greatly increases the odds of apprehending even the most experienced car thieves means that although only a small percentage of car owners use the device, if one of these owners is a victim of car theft, the thief is likely apprehended. Since there are only a few car thieves in the area overall, apprehending even one of them could have a dramatic impact on car theft rates.

Does this make sense?
Let me know if you have any other questions.