The author of "Code Talkers” supports the idea that the code talkers were essential to America’s war effort by illustrating why the code talkers chose to help the US by creating a code.
highlighting the complexity of the Navajo language the code talkers used.
highlighting the bravery of the soldiers the code talkers worked with.
illustrating how the code talkers provided a specific service in a major battle.

The author of "Code Talkers” supports the idea that the code talkers were essential to America’s war effort by:

B. highlighting the complexity of the Navajo language the code talkers used.

Explanation:

In "Code Talkers", Joseph Bruchac highlights the use of Native American languages as codes during the war. More specifically, he gives special attention to the Navajo language because of its complexity. The other languages could be more easily learned by German and Japanese students, who could then break the codes and relay messages to their countries. On the other hand, the Navajo language was so difficult that almost no one that was a non-Navajo could speak it. That made it much harder to break codes that used the Navajo language.

never read it so if i had i would definitely you sorry.

can you take a picture of the passage so i can answer your question