D. all of the above... Mainly because all 3 options have a way of reducing the rate of having to create cellphones.
Hope it helps
More than any other part of America, the South stands apart. Thousands of Northerners and foreigners have migrated to it but Southerners they will not become. For this is still a place where you must have either been born or have "people" there, to feel it is your native ground. Natives will tell you this. They are proud to be Americans, but they are also proud to be Virginians, North Carolinians, South Carolinians, Tennesseeans, Mississippians and Texans. But they are conscious of another loyalty too, one that transcends the usual ties of national patriotism and state pride. It is a loyalty to a place where habits are strong and memories are long. If those memories could speak, they would tell stories of a region powerfully shaped by its history and determined to pass it on to future generations.
During the War of 1812, the emerging United States served notice to their former European masters that they had no rights to control colonies in the Western hemisphere. It then became manifest that their destiny was to rule "from sea to shining sea."
Your answer is TRUE.... hope this helps good luck.