(A) ** It was very complex and difficult to understand.
(B) Nobody new the Navajo language.
(C) It was very hard to spell.
EXPLANATIONS BELOW
Concept note-1: -The Navajo language has no definite rules and a tone that is guttural. The language was unwritten at the time, notes Carl Gorman, one of the 29 original Navajo code talkers. “You had to base it solely on the sounds you were hearing, ” he says. “This made it very difficult for others to understand."
Concept note-2: -The Navajo Code Talkers were successful because they provided a fast, secure and error-free line of communication by telephone and radio during World War II in the Pacific. The 29 initial recruits developed an unbreakable code, and they were successfully trained to transmit the code under intense conditions.
Concept note-3: -However, the Marine Corps took the code to the next level and made it virtually unbreakable by further encoding the language with word substitution. During the course of the war, about 400 Navajos participated in the code talker program.
Concept note-4: -“The Navajo language is a very difficult language to learn. Students need to learn to use muscles that are not used in English. The best way to learn is to try to speak, ” Begay said. “The Navajo language has diacritical markings, such as high tones, nasal sounds and glottalized consonants.