Aperson took a drug an hour or two ago. now the person sits alone, quietly and intensely listening to the sap running in a tree with leaves that appear to be a brilliant purple to the drug user. most likely, the person has recently used:

The us economy received all of the following benefits as a result of technological advancements during industrialization except a. increased production b. reduced costs of consumer goods c. increased farm employment d. the invention of new products