One of the characteristics of children in the concrete operations stage is:

Children in the concrete operations stage, which typically occurs between the ages of 7 and 11, are characterized by their developing ability to think logically and understand the perspectives of others. This stage marks a transition from the earlier preoperational stage, where thinking is more egocentric. During concrete operations, children begin to grasp concepts such as conservation and can understand that others may have different viewpoints or experiences than their own.

This understanding of others' perspectives is crucial for social interactions and lays the groundwork for more complex cognitive skills that develop in later stages. While their thinking is still rooted in concrete experiences, they can process more intricate ideas related to social relationships and empathy.

The other choices reflect characteristics from different developmental stages or concepts that do not apply to the concrete operations stage. For example, abstract thinking is more prevalent in the following formal operations stage, egocentrism decreases as children move through these stages, and the use of symbols improves significantly as children develop.