Why shouldn't the word adorn be divided by a hyphen? A. Do not separate a one-letter syllable from the rest of the word. B. Do not divide a one-syllable word. C. A two-letter word ending should not be carried over to the next line. D. Do not divide proper nouns or proper adjectives. Question Resources
"A. Do not separate a one-letter syllable from the rest of the word" would be the best option from the list, but more specifically the first syllable "a" here does not modify the rest of the word in any way.