Answer:
for example money helps to facilitate trade.it is a medium exchange because buyers and sellers agree to it's common value.medium of exchange was created to acquire antiquity and awareness
Answer: c) Substage 3: Secondary circular reactions
Explanation:
Piaget's theory posits that children go through four different stages of cognitive development. Their mental development includes language, morals, memory and the like.
The sensorimotor stage is the earliest in Piaget's theory of cognitive development and is described as a period of tremendous growth and change.
It is divided into substages, the third of which is called SECONDARY CIRCULAR REACTIONS where the child becomes more focused on the outside world and begins to repeat activities to derive joy from them such as picking up a toy to put in their mouth.
