Read the passage. Often underestimated, colonial women were important spies during revolutionary times. Though they received little to no praise, these women spies worked quietly behind the scenes to aid the colonial cause. Some would spy on British officers who were occupying their homes. They created secret codes to communicate with one another, such as by the order they hung the laundry on the clothesline. The British later declared that the walls must have had ears.

Which theme is best supported by this passage?

Promises are made to be broken.
Courage can be seen in unlikely people.
Growth can come from failure.
Life decisions can be difficult.