A toddler throwing a tantrum because they want to do something themselves is demonstrating:

The correct answer is b) Autonomy vs. Shame and Doubt.

This stage, according to Erik Erikson’s theory of psychosocial development, occurs in toddlers (around ages 1-3) and is characterized by the child’s desire to assert independence. When a toddler throws a tantrum because they want to do something themselves, it reflects their emerging sense of autonomy. They are attempting to take control and make choices, which is a crucial part of their development at this age.