Three-year-old toni and her family got a new yorkie puppy last week. the puppy's name is maxine and it weighs only 2 pounds. her neighbors also got a new puppy, but they got a large-breed st. bernard. when toni went to her neighbors' home to visit their puppy, who weighed 15 pounds at only 8 weeks of age, toni refused to believe it was actually a puppy. toni was demonstrating
a) an underextension error.
b) a misuse of telegraphic speech.
c) an overextension error.
d) a phonemic error.

D

Explanation:

She thinks all puppies weigh little but she did not see the phenomenon of large puppies.   Sorry if I'm wrong

A) an underextension error

Explanation:

"Underextension occurs when a categorical term (a word used to describe a group of things) is used in language improperly by only using it for one object instead of all objects that belong in that category. This often occurs in children when they are initially acquiring and developing language. Children will frequently not apply a new word to objects that it should be applied to."

Reference: AlleyDog.com. “Underextension.” Underextension Definition | Psychology Glossary, 2019

answer; gender,race,age,/// (d) all of these;