What are the things that normally become "self-defining memories?

Which sentence from this passage explains what the main characters do in rosencrantz and guildenstern are dead? "tom stoppard's play, rosencrantz and guildenstern are dead, draws on two previous theatrical works: shakespeare's hamlet and samuel beckett's waiting for godot." "as in beckett's play, rosencrantz and guildenstern pass the time by impersonating other characters, engaging in word play, and remaining silent for long periods of time." "these same two characters were also featured in a parody of hamlet, the short comic play by w. s. gilbert entitled rosencrantz and guildenstern." "gilbert's play makes rosencrantz and guildenstern into central characters and alters the storyline of hamlet."

As for this city's government, i don't want to say much, except that it is a shame – a shame; but if i should live twenty-five years longer – and there is no reason why i shouldn't – i think i'll see women handle the ballot. which quotation correctly uses ellipsis to shorten twain’s words? as for this city's government, i don't want to say much, except that it is a shame . . a shame; but if i should live twenty-five years longer – and there is no reason why i shouldn't . . i think i'll see women handle the ballot. as for this city's government, i don't want to say much, except that it is a shame – a shame; but if i should live twenty-five years longer . . i shouldn't – i think i'll see women handle the ballot. as for this city's government, i don't want to say much, except that it is a shame – a shame; but if i should live twenty-five years longer – and there is no reason why i shouldn't . . as for this city's government, i don't want to say much, except that it is a shame – a shame; but if i should live twenty-five years longer . . i think i'll see women handle the ballot.

I’ve given a lot of thought to what one of them should be, and the answer seems clear.