Final answer:
Malcolm and Donalbain, King Duncan's sons, suspect foul play in their father's murder and flee Scotland to ensure their safety.
Step-by-step explanation:
Malcolm and Donalbain are the sons of King Duncan in Shakespeare's play Macbeth. They suspect foul play after the murder of their father, and they decide to flee for their safety, with Malcolm escaping to England and Donalbain to Ireland. This decision is pivotal as it allows them to avoid immediate suspicion and possible death at the hands of the murderer, who they correctly assume is among those close to the throne and the royal family. They also discuss their suspicions aside, indicating the danger they feel and the need for discretion. This scene underlines themes of betrayal, the corruptive nature of power, and the breakdown of moral order.