Answer:
Ambition
Explanation:
The trait that is most obvious in Macbeth in Acts I and II is his ambition. At the beginning of Act I, Macbeth hears the witches prophecy and realizes he might be crowned king. From that moment on, Macbeth's thoughts are controlled by his ambitions, which lead him to plan the murder of the king, and then to take action and follow through with his plans.
