Child-centered lessons focus on the overall growth of the child, addressing not just academic learning but also emotional, social, physical, and intellectual development. These lessons emphasize the interests, abilities, and learning styles of each child, encouraging active participation, creativity, and exploration. Therefore, such an approach supports the complete or holistic development of children, preparing them for lifelong learning and responsible citizenship. - Option (1): Excessive action – This is incorrect as child-centered education is about balanced development, not promoting unregulated activity.
- Option (2): Complete development – This is correct because the aim of child-centered education is to foster all-round development in children.
- Option (3): Development of civic qualities – While civic development is a part of education, it is not the sole aim of child-centered lessons.
- Option (4): None of these – Incorrect, as option (2) provides the accurate goal.
Answer: $\boxed{\text{Complete development}}$