Answer:
2: first habits and primary circular reactions sub-stage
Explanation:
A primary circular reaction is described as one of the sub-stages involved in the sensorimotor stage which is considered as an important stage in the cognitive development theory and was introduced by Jean Piaget. A primary circular reactions stage starts from one month of the infants' life and lasts through four months of age. At this stage, an infant tries to re-create or reproduce a particular event that has happened via accident, for example, thumb sucking. An infant tends to coordinate new schemas and sensation.
The correct option is 2, in the question above.
