Answer:
It means "Suribachi"
Step-by-step explanation:
The question its only asking you to decode a singular word
During the Battle of Iwo Jima, Navajo code talkers sent an extremely important message to US military leaders. It formed one word which was
Sheep-Uncle-Ram-Ice-Bear-Ant-Cat-Horse-Itch
if you take the first letter of each word you get "SURIBACHI"
In the question It also says "Even after you decode the word, you probably won’t understand it. You will get more information after you complete part B. "
In part b: Its basically a map and its says "Look at the Allied landing plan for the island of Iwo Jima in 1945. Click the spot you decoded in part A on this map. "
and the answer is "mount Suribachi"