Experts who study a country's development measure the A level of worker satisfaction B. quality of goods produced and sold C. cost of the technology used by the primary sector D economic health, social conditions, and living conditions Please select the best answer from the choices provided O A B С OD Mark this and

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )

the use of electrical signals that transit messages is know as

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.