Answer:
Both rows have equal amounts of coins.
Explanation:
Concrete-operational stage: In psychology, the concrete-operational stage the part of the cognitive-developmental theory which was proposed by Jean Piaget and is considered to be as the third stage in his theory. The concrete-operational stage starts around the age of seven and lasts through eleven years of age.
In the concrete-operational stage, a child develops logical thoughts. The stage is termed as concrete-operational because a child mentally operates on concrete events or objects. A child gains the ability of reversibility, transitivity, conservation, seriation, etc.
In the question above, the child will respond as both rows have an equal amount of coins being in a concrete-operational stage.
