Final answer:
Donalbain is Duncan's second son in Shakespeare's play "Macbeth," who suggests to Malcolm that they should flee and eventually escapes to Ireland.
Step-by-step explanation:
In Shakespeare's play "Macbeth," Duncan's second son who suggests to Malcolm that they should flee and eventually escapes to Ireland is Donalbain. After his father's murder, Donalbain realizes the danger he is in and decides to flee to ensure his own safety. Duncan's second son in Shakespeare's "Macbeth" is Donalbain. Following the murder of their father, King Duncan, Donalbain suggests to his elder brother Malcolm that they should flee for their safety. This decision is driven by the perilous circumstances and the suspicion surrounding Duncan's murder. Donalbain's escape to Ireland is a strategic move to avoid potential harm or reprisals. This event adds complexity to the political intrigue within the play, as Malcolm heads to England, and both brothers are later suspected of being involved in their father's murder. The escape of Donalbain contributes to the overall atmosphere of suspicion, fear, and political unrest in "Macbeth."