Option(b)

Look at these lines from the last paragraph "civil disobedience is a promising variation on a theme that includes the perpetual revolutions" and "Consciously and unconsciously, intentionally and unintentionally, it imagines and cultivates another political context". The question is what is the final outcome of a perpetual revolution. It finally creates a new political context.

So answer (b) is correct.

All the other answer options are the intermediate conclusions and not the final outcome.