Which of the following children should be referred for further assessment regarding language development? 1. A 2-year-old who has a vocabulary of 300 words and can combine two or three words in a...

Which of the following children should be referred for further assessment regarding language development?

1. A 2-year-old who has a vocabulary of 300 words and can combine two or three words in a phrase.

2. A 3-year-old who has a vocabulary of 900 words and can make a complete sentence of three or four words.

3. A 2-year-old who has a vocabulary of 100 words and can point to objects.

4. A 1-year-old who has a vocabulary of eight words and can say “mommy” and “daddy” with specific reference to the correct person.