George is presented with two identical beakers, and then watches as the experimenter pours liquid from one beaker into a third beaker, which is taller and thinner than the first two. this is a test to see if george has achieved

a. conservation.

b. seriation.

a. conservation.

Explanation:

Conservation: The term is given by Jean Piaget, in his theory of cognitive development. According to him, if a child got fails in the conservation task of liquid then he or she tends to be at the Pre-operational stage. And with fail in liquid conservation a child might get fail in the conservation of length, matter, and, number, etc.

According to Jean Piaget, In conservation, a child understands the concept that any change in the form of object or substance doesn't change its volume, mass, and amount. It occurs around seven to eleven years of age i.e in the Operational stage of cognitive development.

The test signifies that if George has achieved the conservation method.

your answer is "graduates" hope this