'The hostess asked my son, "Did you sleep well?"' — अप्रत्यक्ष कथन:

उत्तर: (A) The hostess inquired my son if he had slept well. — Direct→Indirect: "you"→"he" (refers to son), "did sleep"→"had slept" (tense back-shift), "asked/inquired...if" (yes/no question → if/whether). "The hostess inquired my son if he had slept well."