Final answer:
When Macbeth learns that Birnam Wood is marching towards Dunsinane, he reacts with fear and disbelief. However, he doesn't give up right away because he is driven by his ambition and refuses to accept defeat.
Step-by-step explanation:
When the report comes that Birnam Wood is moving toward Dunsinane, Macbeth reacts with fear and disbelief. He realizes that the witches' prophecy is coming true and that his downfall is imminent. However, he doesn't give up right away because he is driven by his ambition and refuses to accept defeat.
Macbeth's reaction is understandable given the circumstances. He had been told by the witches that he would not be defeated until Birnam Wood came to Dunsinane. Seeing the woods seemingly move towards his fortress signifies that the prophecy is unfolding and his enemies are closing in.
Furthermore, Macbeth's refusal to give up right away is a testament to his character. He is a deeply ambitious and determined individual who is willing to fight until the very end to retain his power and position. He is not one to easily surrender, especially in the face of adversity.