Answer:
The correct answer is D, as that statement is false. The Brandt Line theory wasn't developed by an American economist, as it was proposed by the German politician Willy Brandt.
Step-by-step explanation:
Proposed by the German Chancellor Willy Brandt in 1980, the Brandt line is a line that divides the north and the south. It shows the gap between the most developed regions and the least developed regions.