Annette started crawling, then standing, and is now taking her first steps. this aspect of annette's development falls within the domain.

The  Annette  who  started  to  crew. then  stand  and  the  talked   is  in  physical  domain   of  development. Physical  development start  in  human     infancy  and  continues   upto  late  adolescent  which  concentrate  on  gross  and  fine motor skills  as well  as  puberty. Physical  development  involve  developing control  over  the   body  particularly  the  body  muscle  and  physical  coordination.

I believe the correct answer is D.