A new device uses the global positioning system to determine a cow' s location and, when a cow strays outside of its pasture, makes noises in the cow' s ears to steer it back to its home range. Outfitting all of the cattle in a herd with this device is far more expensive than other means of keeping cattle in their pastures, such as fences. The device' s maker nevertheless predicts that ranchers will purchase the device at its current price. Which one of the following, if true, does the most to support the prediction made by the device's maker? ['The device has been shown to be as effective as fences at keeping cattle in their pastures.', "The price of the device will come down appreciably if the device's maker is able to produce it in large quantities.", 'The device has been shown not to cause significant stress to cattle.', 'As they graze, cattle in a herd follow the lead of the same few members of the herd.']