Which Is an Argument in Support of Interest Groups

Which is an argument in support of interest groups?

A) Leaders of interest groups are unelected and can thus take actions without fear of backlash.
B) Groups representing majority interests can act as a counterbalance to the tyranny of the minority.
C) The formation of interest groups comes naturally to humans and should thus be encouraged.
D) Interest groups generally secure benefits for society as a whole while shouldering the costs.