Final answer:
The evidence from the text that Lady Macbeth questions her husband's resolve to kill the king is found in her statements regarding Macbeth's desire to win truthfully but also wrongly.
Step-by-step explanation:
The evidence from the text that supports the idea that Lady Macbeth questions her husband's resolve to kill the king is found in the lines:
That wouldst thou holily, wouldst not play false,
And yet wouldst wrongly win.
This shows that Lady Macbeth recognizes that Macbeth desires to achieve the crown through 'holy' means without deceit, but also understands that in order to succeed, he may have to act in ways that go against his moral principles.
Learn more about Lady Macbeth's questioning of Macbeth's resolve to kill the king