Which word requires the highest skill for orally segmenting phonemes?

The word "stamp" requires the highest skill for orally segmenting phonemes due to its complexity in sound structure. It consists of five phonemes: /s/, /t/, /æ/, /m/, and /p/. The presence of the initial consonant blend "st" adds to the difficulty, as it involves recognizing two sounds (the /s/ and /t/) that together create a single blended sound at the beginning of the word.

In contrast, the other words—"cat," "hat," and "map"—are simpler. These words contain only three phonemes each, making them easier to segment. The phoneme structures in these cases are straightforward with no blends, which lowers the required skill for correct segmentation. Therefore, "stamp" stands out as the word that necessitates a more advanced phoneme segmentation skill.