I think the answer is b but please let me know if it was right
Basic industries are those exporting from the region and bringing wealth from outside, while nonbasic (or service) industries support basic industries. Because of data problems it is not practical to study industry output and trade flows to and from a region. As an alternative, the concepts of basic and nonbasic are operationalized using employment data.
The basic industries of a region are identified by comparing employment in the region to national norms. If the national norm for employment in, for example, Egyptian woodwind manufacturing is 5 percent and the region's employment is 8 percent, then 3 percent of the region's woodwind employment is basic. Once basic employment is identified, the outlook for basic employment is investigated sector by sector and projections made sector by sector. In turn, this permits the projection of total employment in the region. Typically the basic/nonbasic employment ratio is about 1:1. Extending by manipulation of data and comparisons, conjectures may be made about population and income. This is a rough, serviceable procedure, and it remains in use today. It has the advantage of being readily operationalized, fiddled with, and understandable.
*Opinionated and personal essay*
America's future should be bright and technologically advanced. Throughout history, America has been enhancing and developing socially, mechanically, and politically. In the future, the expectancy would be very high due to the human race and America's prosperity. From the stone age's fire to the Civil War's new weaponry, America has been steadily improving upon civilization. Morally, new laws and rights are always amended in order to be fair and equal towards all no matter how they are different. America's future should be developed and have advanced.