The answer is A: Provide some explanation of what made Junius, Socrates, Epaminondas, Cato the Younger, and Sir Thomas More such an interesting group.
Although lacking in modesty, one could recommend the answer above to the great satirist writer, Jonathan Swift, to improve the allusion in the passage. Being a learned man, Swift had control over the thoughts of the characters cited, but, then, as now, it would have been illuminating for the common reader to expand on the thoughts that made each character relevant and why they´d be put into a single group, they who were, in so many ways, so different: Junius, the Stoic philosopher, Socrates, the lover of wisdom, Epaminondas and Cato the younger, the wise Greek and Roman statesmen, respectively, and, finally, More, English philosopher and statesman alike.