Answer:
The correct answer is - substage 4. Coordination of secondary circular reactions .
Step-by-step explanation:
In Piaget's substage four which is known as coordination of secondary circular reactions. In which individuals of 8 to 12 months that shows goal directed behavior which means that develop coordination to solve problems intentionally.
It also involve the developing complex sequences from secondary reactions. He concluded that the individuals of this group have no clear image of the object if it is not direct.
Thus, the correct answer is - option 4. Coordination of secondary circular reactions .