Answer: B.
Explanation: Olivia is most likely to correspond to the autonomy vs shame and doubt of the Erikson's stages. This stage describes children from approximately 18 months to 4 years, where the child is learning how to take over their body and control it, leading to certain grade of autonomy; when completing tasks, children get the feeling of control and that helps to strenghten their self steem.
Those who 'complete' this stage successfully grow a confidence in themselves that those who doesn't 'complete' the stage don't have.