Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions. Teenage Brains

According to this article, what did the development of brain imaging technology allow researchers to do?

Which situation is the best example of opportunity cost? a country chooses to produce bananas instead of wheat. a country chooses to invest in manufacturing and agriculture. a country chooses to specialize in producing paper products. a country chooses to export all of its products.