Answer:
Therefore, his theory of cognitive development suggests that developmental changes are discontinuous and occur in stages.
Explanation:
Psychologist Jean Piaget formulated the Theory of Cognitive Development. His theory suggests that developmental changes are discontinuous and occur in stages. Instead of there being a gradual, fluid process of development, in Piaget's theory children show different abilities according to the stage in which they are. Those stages are connected to their age, and the changes they bring are sudden. Therefore, there is a discontinuation, as if the second stage is supposed to happen at a certain time and in a certain manner, independently of the first stage, for instance. In his theory, there is a total of four developmental stages.
A singular verb would be used with a singular noun (she, Bob, Jane, truck) while a plural verb would be used with a plural noun (they, cars, books).
For example "The truck drives away." Truck being a singular noun and drives being a singular verb.
Another example
"The cars drive away." cars being a plural noun and drive being the plural verb.
One theme is perseverance. <span>Buck is determined to survive, but he also wants to be a leader. In order to do this, he has to complete hard tasks, kill certain things, and prove that he has the right qualities.</span>