Three of the Following Statements Accurately Describe the Diversity We

Three of the following statements accurately describe the diversity we are likely to see in students' cognitive development.Which statement is inaccurate?

A) Some children in a first-grade classroom may show concrete operational thought, whereas others may show signs of preoperational thought.
B) Students with physical and sensory challenges may have less general knowledge of the world, limiting their ability to relate new experiences to things they already know.
C) When eighth graders are asked to separate and control variables in a problem about fishing, those who have often fished with family or friends will be more successful than students who have never fished.
D) Rehearsal is more commonly observed in children who live in developing countries than in children who live in highly urbanized and industrialized ones.