The correct answers is D.
Outsourcing is a current trend in international trade. It started due to improvements in transport and communication technolgies, which have enabled to divide production processes in many steps, and to locate each of these steps in different parts of the globe in order to save production costs.
Companies locate their production processes in countries where they pay less for the factors of production they need to manufacture goods and services. Firms save costs and increase their profits by outsourcing the production. They also set concerns in their home countries because they destroy job positions there while there create new ones abroad.