in Shelby's Dark Ghettos, What does Shelby endorse as the threshold for 'tolerable injustice'? Pick one option. 1) There are widespread socio-economic injustices, and systematic failures of fair equality of opportunity, as well as regular failures of the 'constitutional essentials', but the most likely outcome of passing power from the current regime to another (by abdication or revolution) would. 2) There are widespread socio-economic injustices, and failures of fair equality of opportunity (under any reasonable interpretation), but the 'constitutional essentials' are guaranteed. 3) There are widespread socio-economic injustices, but the basic structure of society is organized to publicly convey to each participant that their interests are just as important as anyone else's. or 4) There are some socio-economic injustices, but they are not widespread, and there are no violations of fair equality of opportunity