Final answer:
According to the social interaction theory, Eliza will show the most advanced language skills at 12 months of age.
Step-by-step explanation:
According to the social interaction theory, the child who will show the most advanced language skills at 12 months of age is Eliza. The social interaction theory suggests that language development is influenced by the amount and quality of social interaction a child has with others.
In the given table, Eliza hears the most words per day from various sources compared to Emily and Ben. This higher exposure to language from mom and dad, TV, and radio is likely to contribute to a more advanced language development at 12 months of age according to the social interaction theory.
It is important to note that language development is a complex process influenced by various factors, and this answer is based on the given information and the assumptions of the social interaction theory.