What specifically has happened in scene iv to prompt the thoughts hamlet expresses in his soliloquy?
1. hamlet killed polonius and realized that revenge is not the proper way to operate.

2.he found out that claudius sent rosencrantz and guildenstern to have hamlet killed. hamlet now knows that he must kill claudius or be killed himself.

3.hamlet has seen that both norway and poland are willing to lose lives and money over a piece of land and that he has a much greater cause.

Read the following passage: he roamed from chamber to chamber with hurried, unequal, and objectless step. the pallor of his countenance had assumed, if possible, a more ghastly hue— but the luminousness of his eye had utterly gone out. the once occasional huskiness of his tone was heard no more; and a tremulous quaver, as if of extreme terror, habitually characterized his utterance. there were times, indeed, when i thought his unceasingly agitated mind was laboring with some oppressive secret, to divulge which he struggled for the necessary courage. which of the above ideas might be considered foreshadowing? he is wandering all over the chamber his skin tone is really pale his voice is quivering the narrator thinks he is laboring with an oppressive secret