Final answer:
The speaker contrasts himself to Shakespeare's Hamlet by calling attention to his own insignificance, as the depth of Hamlet is seen as profound and nearly unanalyzable in comparison. Option number d is correct.
Step-by-step explanation:
In the provided passage, the speaker appears to be ruminating on the depth and complexity of Shakespeare's character Hamlet, suggesting that the essence of Hamlet is difficult to pinpoint and resides in an 'unmistakable tone which is unmistakably not in the earlier play'. This contemplative tone indicates a sense of introspection and perhaps even confusion, which could point towards the speaker feeling an insignificance in comparison to the profound nature of Hamlet's character.
Hamlet’s character is multi-layered, full of unresolved substance that challenges direct analysis, whereas the speaker may perceive himself as less complex or consequential. Therefore, within the context of the passage, the most fitting answer would be D. insignificance, highlighting the speaker's self-perceived lack of depth in comparison to the rich texture of Hamlet's being.