Which sentence best expresses the main idea? a. MIT has developed a popular program of online classes.

b. Online learning has dramatically changed the lives of people worldwide.

c. MIT has launched an online program that actually has more users than MIT has living graduates.

d. Although online learning cannot replace a live teacher, it provides learning opportunities for people worldwide.

Statistics show that internet usage in the united states has grown from just 41% of households in 2000 to 77% of households in 2010. which of the following best describes how online shopping has added to cultural diffusion in the united states? it encourages people to purchase more than they normally would. it makes news and information about products available in an easy-to-consume format. it has allowed large corporations to expand into new states, creating more jobs. it makes goods more accessible to people who might not normally be able to get them.