Answer:
stage three
Explanation:
Sensorimotor stage: In psychology, the sensorimotor stage is one of the stages in theory of cognitive development given by Jean Piaget, and it consists of six-sub-stages including primary circular reactions, coordination of reactions, early representational thought, secondary circular reactions, reflexes, and tertiary circular reactions.
Stage three of the sensorimotor stage is secondary circular reactions that start with the age of four months and lasts through eight months of an individual's life. An infant at this stage, repeats actions that encompass toys, objects, persons, or clothing, etc. An infant tends to repeat a particular action to get some response.
