Final answer:
Self-awareness in children develops around 2 years old, as evidenced by their ability to recognize themselves and grow in social understanding and autonomy.
Step-by-step explanation:
Self-awareness in children is developed by the age of 2 years old.In psychological development, children begin showing signs of self-recognition, a component of self-awareness, around 18 months old. By 24-36 months old, they are able to name or point to themselves in pictures, indicating clear self-recognition. Their cognitive skills continue to grow, and by 4 years old, they can understand that people have different thoughts and feelings, a concept known as theory-of-mind (TOM). This allows them to be aware of others' perspectives and exhibit improved social behaviors and autonomy. Reliable studies suggest that these developmental milestones indicate a fundamental awareness of self that develops early in life.Conclusion Given the provided research and cognitive developmental milestones, it is evident that children develop self-awareness by 2 years old, aligning with our main answer which is choice a) 2 years old.