Which of the four March sisters seems to be the most "in charge" or confident? Which of them seems to be more hesitant and unsure of herself? Use textual evidence from chapter 1 to support your answer.

At the beginning of chapter one, the four March sisters are introduced. All are in rather poor spirits, but it is immediately clear what their personalities are. Jo declares that they should "each buy what we want," adopting a commanding tone. She is the decision-maker among the siblings and is confident in expressing her own feelings: she argues with Meg, saying that it is her, Jo, who has the worst time with her daily chores. Beth, meanwhile, is reluctant to be drawn into this conversation, saying that it is "naughty to fret."
Meg, as the eldest, has some degree of control over the group as well. She calls the other girls "children" and tells them not to "peck" at each other. Meanwhile, Jo resists the criticisms that she is boyish and continues her behavior defiantly, saying it is because it is boyish that she whistles. Beth, "the peacemaker," tries to intervene between her squabbling sisters; meanwhile, Amy, the youngest, is fiery and disagreeable too, a "goose," according to Meg, and someone whose manners might soon turn into "airs" when she is older.
An argument could be made, then, that either Jo or Meg is the dominant sister, but on the other hand, Beth, who is quiet and adored by all, is equally able to calm matters in her own way.