A poor habit is a behavior that you repeat all the time and that is not good for you. According to that definition and evauating the options given, the one that would be a poor habit to blame for Brooke's problems is that she didn't eat breakfast. Also, another reason for this is that when students don't eat breakfast, they can have memory and concentration problems.
Salutary Neglect was when Britain left the colonies alone from 1714-1763 after the Glorious Revolution where William and Mary came to power in England. Hope this helps! Have a great day!