A discounter is a shop or organization which specializes in selling things very cheaply. Discounters usually sell things in large quantities, or offer only a very limited range of goods. It is any business that provides a given service or product at a discounted price, especially one that threatens the market share of previous sector leaders.
The answer would be: D. Attract investment When developing nations attract investment from more developed nations, it will open up a lot of job opportunities for the people in the Developed nations. This will make an average citizen in that nation have a higher disposable income that they could spend to increase their standard of living.