What describes the sound that corresponds to a grapheme in phonetics?

The correct choice identifies the relationship between written letters and their corresponding sounds. Grapheme-phoneme correspondence specifically refers to the ability to understand how graphemes (the written representation of sounds) relate to phonemes (the individual sounds in spoken language). This principle is fundamental in phonetics and literacy education, as it forms the basis for decoding words during reading. By recognizing that a grapheme typically represents a specific phoneme, learners can more easily sound out words and develop their reading skills.

While lexical mapping pertains to connecting words with their meanings or representations within mental lexicon, it does not specifically focus on the sound-grapheme relationship. Phoneme analysis involves breaking down words into their individual sounds, which is certainly related but not explicitly about the written letters. Graphemic structure refers to how graphemes are organized within a language's writing system, but again, it doesn't directly address the sound correspondence aspect in the same way that grapheme-phoneme correspondence does. This clear focus on the connection between written and spoken forms is why this choice is the correct answer.