The correct answer is D.
When a company decides to outsource some or all its manufacturing activities it seeks to reduce its production costs, because in less-developed countries factors of production are generally cheaper (land, labor, capital), there are less strict legal requeriments for companies, etc. This allows corporations to produce more efficiently and to become more competitive in the international markets.
The employees in the US suffer the consequences when a US company decides to outsource its activities because many lose their jobs as labor costs in the US cannot compete with those from less-developed nations.