Which letter uses the NATO phonetic 'Echo'?

• A. I
• B. A
• C. E
• D. O

Answer: (C)

Echo is the code word used for the letter E in the NATO phonetic alphabet. In radiotelephony, each letter has a distinct code word to prevent miscommunication, so Echo represents E. Therefore, the letter corresponding to the phonetic Echo is E. For comparison, I would be spoken as India, A as Alpha, and O as Oscar.