The spelling of the word "bucholtz" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "bu," is pronounced as /bʌ/ with a short vowel sound. The second syllable, "choltz," is pronounced as /kɔlts/ with a silent "h." The "ch" sound is represented by the letter "c" and the "-oltz" ending is pronounced as /ɔlts/. Therefore, the correct spelling of this word is "bucholtz," with the pronunciation /ˈbʌkɔlts/.