The correct answre is C.
Globalization has brought market integration. Both have been possible due to improvements in transport and communications technologies. Many trade barriers have dissapeared and many markets of goods, services and factors of production function at an international or global level.
These processes have led to the division of manufacturing processes in steges, and each stage will take place in a different location all over the world, seeking for paying lower prices for raw materials and factors of production. This practice is called outsourcing and it has affected the US economy negatively, because if manufacturing processes are outsourced, many employees from the manufacturing sector lose their jobs, stop earning an income and, as consequence, the total output of the country decreases and also its economic growth figures.