Question

why was Oliver chosen to ask for more food

Answer 1

Because........he was hungry? 

Answer 2

Oliver Twist, the Charles Dickens hero, would never have asked for more because workhouse children were actually very well fed, a new study shows. Dickens described Oliver's typical workhouse diet as consisting of three meals of "thin" gruel a day, an onion twice a week, half a bread roll on a Sunday.