Questions: A toddler who calls every grown-up man "daddy" is making a(n) error.

The answer is: overextension error.

Explanation:

• Overextension is a common error in language development where a child uses a word in a broader context than is appropriate. In this case, the toddler is using the word "daddy" to refer to all grown-up men, not just their own father. This indicates that the child is overextending the use of the word beyond its specific meaning.
• This is a typical stage in language acquisition where children apply a known word to similar objects or people, even if they don't fit the exact definition of the word.