The spelling of "Laurah" can be explained using the International Phonetic Alphabet (IPA). The first syllable "Lau" is pronounced as /lɔː/, with the "au" sound representing a diphthong of /ɔː/ and /ʊ/. The second syllable "rah" is pronounced as /rɑː/, with a long "a" sound represented by the symbol /ɑː/. Therefore, the correct spelling of "Laurah" reflects its pronunciation, with the use of the "au" and "a" letters clearly denoting the different sounds heard in each syllable.