How did Marteney's experience help her during the fire?

During the fire, Marteney’s experience helped her keep calm (escape) and save the boy

Explanation:

in "letter from a birmingham jail," king argues that there are four basic steps in any nonviolent campaign: "[c]ollection of the facts to determine whether injustices exist; negotiation; self purification; and direct action." finally, direct action is taken and acts such as boycotts and sit-ins are staged.