According to socialists, all of the following are examples of capitalist industries that serve no human need or have a negative affect on human need EXCEPT

Of the following,which is the most reliable method for calculating crowd sizes for demonstrations and rallies?

a. ticket stubs b. aerial photography c. taking estimates from spokespersons d. physical counting

April has been working hard to look at the effects of homework difficulty on student desire to finish the work. She has decided to make sure that each group is equivalent on enthusiasm for school by measuring overall levels

April then pairs up the participants based on their enthusiasm before placing them in to the groups in her study. April is conducting a design. a. within b. between c. mixed d. matched