In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.
The visitor said, 'Is your mother at home?'
The visitor asked me is my mother at home.
The visitor asked to me whether my mother was at home.
The visitor asked to me is my mother at home.
The visitor asked me whether my mother was at home.
D.
The visitor asked me whether my mother was at home.