Final answer:
Justice's behavior indicates that he and Mercedes played with tinker toys.
Step-by-step explanation:
Justice's behavior indicates that he and Mercedes c. played with tinker toys.
In Piaget's view, around the same time children develop object permanence, they also begin to exhibit stranger anxiety, which is a fear of unfamiliar people. Babies may demonstrate this by crying and turning away from a stranger, by clinging to a caregiver, or by attempting to reach their arms toward familiar faces such as parents. Stranger anxiety results when a child is unable to assimilate the stranger into an existing schema.
From the given information, it seems that Justice is not exhibiting stranger anxiety and instead feels comfortable playing with the stranger in the sandbox. This indicates that Justice and Mercedes have established a secure attachment, where Justice feels safe exploring the sandbox and interacting with strangers while Mercedes is nearby.