If a person is sad and gloomy, the early Greeks would have said that the person had which temperament?

A scientific theory is just a guess

a. True b. False Indicate whether the statement is true or false

According to Piaget, children progress through multiple stages of cognitive development, occurring in a fixed order. Which of the following sequences is in the proper order?

a. sensorimotor, concrete operational, preoperational, formal operational b. sensorimotor, preoperational, formal operational, concrete operational c. preoperational, concrete operational, formal operational, sensorimotor d. formal operational, preoperational, concrete operational, sensorimotor