Answer:
Normally secondary reaction
Explanation:
Normally secondary reaction occurs in Piaget's developmental stage. In this stage, the normal reaction occurs at the age of 4 to 8 months. The normal secondary reaction occurs when babies start to react to new pleasurable things. The action involves their bodies and the objects that provide child pleasure.
Jessie's son who is 5 months old Joe, showing interest in people who is around him and make the sounds like very adorable cooing. Joe reacts to this sound to elicit the attention of another person who is around him. He is trying to attract people by doing so. So according to Piaget, Joe is exploring the normally secondary reaction.
