Answer: Autonomy versus shame and doubt
Step-by-step explanation:
Autonomy versus shame and doubt stage is the level of Erickson's psychological theory in which self control sense is established in children.They tends to explore thing with independency and on their own but if this control is not provided to them , they might become low on self esteem and doubt their abilities.
According to the question,Billy is at the stage of autonomy versus shame and doubt as per Erickson's theory because he is indulged in taking initiative to do things on his own with independence.