One physical property that does not describe a change in state is

Which best describes the idea behind the "invisible hand"? producers decide what to make for consumers, which guides the economy. individuals seeking their own self interest benefit the economy as a whole. government sets policy for producers and consumers, which guides the economy. consumers decide what they need and want to buy, which guides the economy.

What is the role of institutions in society - do they perform positive functions, or simply work in the interests of the powerful and against the powerless? (a related question here is why do our life chances vary by class, gender and ethnicity)

In a sense we’ve come to our nation’s capital to cash a check. when the architects of our republic wrote the magnificent words of the constitution and the declaration of independence, they were signing a promissory note to which every american was to fall heir. this note was a promise that all men—yes, black men as well as white men—would be guaranteed the unalienable rights of life, liberty, and the pursuit of happiness. it is obvious today that america has defaulted on this promissory note insofar as her citizens of color are concerned. instead of honoring this sacred obligation, america has given the negro people a bad check, a check that has come back marked “insufficient funds.” but we refuse to believe that the bank of justice is bankrupt. we refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation. and so we’ve come to cash this check, a check that will give us upon demand the riches of freedom and security of justice. in this section of the speech, analyze martin luther king’s connection between a defaulted promissory note and the lack of freedom experienced by african americans. which option offers the best analysis? question 3 options: a. mlk creates this analogy to communicate that america has enough freedom for all, but it needs to live up to its promises. b. mlk makes the analogy that america has run out of freedom. not everyone deserves to have it. c. mlk communicates that america should equally distribute funds to all citizens. everyone deserves equal access to the government’s money. d. mlk demonstrates that america is improving in equality and should keep the forward momentum.