Which set describes the three key language milestones typically achieved between 18 and 24 months?

• A. At least 50 words in vocabulary; growth in vocabulary; combining words
• B. First 50 words in vocabulary; growth in vocabulary; combining words
• C. At least 100 words in vocabulary; growth in vocabulary; producing full sentences
• D. Two-word combinations only; no single words

Answer: (A)

In this age range, language development tends to follow a pattern: the child’s expressive vocabulary is about 50 words, they continue to add new words (vocabulary growth), and they begin to combine words into simple two-word phrases. This combination of about 50 words, ongoing vocabulary growth, and two-word utterances is the typical trio of milestones between 18 and 24 months, making the option that states “at least 50 words in vocabulary; growth in vocabulary; combining words” the best fit. Reaching around 100 words or producing full sentences usually occurs later, and two-word combinations don’t exclude single-word utterances at this stage—the child already uses single words as well.