Final answer:
At 18 months, a child can typically babble, say 10 or more words, or speak four to six words.
Step-by-step explanation:
- A child at 18 months typically babbles, attempting to mimic the cadences of speech.
 - They may also say 10 or more words.
 - They may speak four to six words and use gestures or words to refer to objects or actions.