Final answer:
The soldiers most likely know about the Highwayman returning to the inn because Tim the ostler tells the soldiers when the Highwayman will return.
Step-by-step explanation:
The soldiers most likely know about the Highwayman returning to the inn because C. Tim the ostler tells the soldiers when the Highwayman will return. In Alfred Noyes' poem 'The Highwayman,' Tim the ostler is the one who informs the soldiers about the Highwayman's return. He is aware of the Highwayman's visits to the inn and shares this information with the soldiers.
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