Marco's brother suggests they change the rules of the game they are playing. marco protests and insists that rule changes are not allowed. according to piaget, marco is

In the Preoperational Stage of Development

Explanation:

According to Jean Piaget, there are four major stages in child's cognitive development: sensorimotor stage (birth to two years), preoperational stage (2-7), concrete operational stage (7-11) and formal operational stage (12 and up).

In the Preoperational Stage, children still think egocentrically and struggle to see the perspective of others. They think in very concrete terms and they do not like changes. They struggle with logic and taking the point of view of other people.

Marco is refusing to change the rules of the game because he does not understand the idea of interacting with others and he sees the suggestion as a personal attack against him.

heteronomous thinker

Explanation:

you would times this by how many days there are in a year 365*400=$146000