The answer is C. The use and delivery of resources depend on land use
You would need to be more specific in what the value 'over 100 dB' is
1 million is 1 x 10^6
1 billion is 1 x 10^9
1 trillion is 1 x 10^12
So 12 trillion miles is 12 x 10^12 which converts to 1.2 x 10^1 x 10^12 = 1.2 x 10^13
