Which statement about the economy is true?

a. it exists only in countries that have a division of labor.

b. it has only been in existence since the late 1800s.

c. it's the primary determinant of people's freedoms.

d. its impact on people is studied by sociologists.

How can changes in technology or consumer demand make it difficult for people to get jobs? by changing the number or kind of jobs available by making it possible for some people to work fewer hours by making it difficult for people to buy what they want by creating a demand for things that are not available

In a citizens elect the president as head of government separate loy from the legislature

Aresearcher is studying women recently admitted to a state prison. all potential subjects must have children under the age of five. research subjects will be given a basket of toys to use at their children’s first visit that the children can then take home. in assessing this proposal, the irb needs to determine that the toys are: age appropriate.not an excessive incentive.educational.of high quality.