During the critical stage, how many new words are produced per day in productive vocabulary?

• A. 2-4 new words per day; twice that for understanding
• B. 1-2 new words per day
• C. 5-6 new words per day
• D. 10-12 new words per day

Answer: (A)

The question tests how quickly children expand their productive vocabulary during the language-critical period. In this stage, kids actively say new words, and the typical rate is about two to four new words per day. Understanding words (receptive vocabulary) tends to grow faster, roughly twice that rate, so comprehension expands more quickly than spoken production. So this option reflects the usual pace of active word growth, while the other rates are either too slow or too rapid for productive vocabulary during this period.