The correct spelling of the phrase "art the fence" can be explained with IPA phonetic transcription. The first word "art" is pronounced as /ɑːrt/ with a long "a" sound and a strong emphasis on the "r" consonant. The second word "the" is pronounced as /ðiː/ with a voiced "th" sound and a long "e" sound. Finally, "fence" is pronounced as /fɛns/ with a short "e" sound and a hard "c" sound. So, the correct spelling of this phrase is "art the fence."