Answer:
A
Step-by-step explanation:
A psychologist asks people to envision a circle. Next, he asks them to draw the circle they envisioned. When comparing the pictures, almost all circles look identical. The fact that a circle typically fits a specific and rigid set of rules is an example of a: formal comcept
A formal concept is an idea defined by a concrete or specific set of rules, guidelines, or properties. For a idea to be considered to be a formal concept then it has to meet all of the guidelines and rules required to fit the concept . In this case a circle it fits a specific rigid set of rules it is round that is the concept of a circle.