Identify the phonetic alphabet word for 'P'.

The phonetic alphabet word for 'P' is indeed 'Papa.' This system, commonly referred to as the NATO phonetic alphabet or the International Radiotelephony Spelling Alphabet, is used in military and aviation communications to ensure clarity and avoid misinterpretation of letters over radio or telephone transmissions.

Using 'Papa' for the letter 'P' helps to eliminate confusion, particularly in noisy environments or situations where language barriers may exist. The other options represent different letters: 'Quebec' signifies the letter 'Q', 'Romeo' represents 'R', and 'Sierra' stands for 'S.' Each of these words corresponds to a specific letter to maintain effective communication. Therefore, 'Papa' is the correct choice for 'P' within this specific phonetic alphabet framework.