when children manipulate, count, and measure objects, they enhance their cognitive development to the stage that piaget called (a) concrete operations (b) latency (c) moral realism (d) industry.

http://www.onelook.com/?w=concrete&ls=a

the answer is A

To determine the correct answer, let's break down the options and understand Piaget's stages of cognitive development.

Piaget, a famous developmental psychologist, proposed a theory of cognitive development in children. According to Piaget, children progress through four stages:

1. Sensorimotor Stage (birth to 2 years): Children develop object permanence and acquire basic sensory and motor abilities.
2. Preoperational Stage (2 to 7 years): Children develop symbolic thinking, but their logic is limited and egocentric.
3. Concrete Operational Stage (7 to 11 years): Children develop the ability to think logically about concrete objects and events.
4. Formal Operational Stage (11 years and beyond): Adolescents and adults develop hypothetical thinking and abstract reasoning skills.

Based on this understanding, option (a) concrete operations aligns with Piaget's cognitive development stage where children gain the ability to manipulate, count, and measure objects. Concrete operational thinking allows children to understand concepts like conservation, classification, and mathematical operations with real-world objects.

Therefore, the correct answer is (a) concrete operations.