Final answer:
The redcoats likely learned about the highwayman's plan from various sources, including intelligence reports and captured individuals.
Step-by-step explanation:
The redcoats probably learn of the highwayman's plan from multiple sources, including intelligence reports and captured individuals. In the context of the American Revolutionary War, the redcoats were British soldiers, and the highwayman refers to the colonial militias and minutemen. The British received information about the colonial activities through their own spies and informants, as well as from actions taken by colonial leaders such as Samuel Adams and John Hancock.