Final answer:
The primary outcome of the formation of attachments in infancy is a working model of self, others, and relationships.
Step-by-step explanation:
The primary outcome of the formation of attachments in infancy according to Bowlby's attachment theory is a. A working model of self, of others, and of relationships.
Bowlby proposed that a healthy attachment involves a secure base provided by a responsive caregiver, which allows the child to explore their surroundings with a sense of safety. This secure attachment bond forms the basis for the child's internal working models or mental representations of themselves, others, and relationships.
These internal working models influence the child's future relationships and social interactions throughout their life.