Final answer:
There is no specific answer given in the provided research regarding the exact number of words capable readers learn to read in a day. Vocabulary development varies greatly among individuals, and while there are estimates of 10-20 new words per week for young children, the daily word acquisition rate for readers is not given.
Step-by-step explanation:
According to research, the number of words capable readers learn to read in a day is not explicitly stated in the provided reference materials. However, research on vocabulary development suggests that children in the early years do experience vocabulary spurt, learning an estimated range of about 10-20 new words per week, although this is not universal for all children.
For school-age children, particularly those in second grade, there is a concern about the learning crisis, with high percentages in some countries unable to read even a single word of a short text after two years of school. Adults, on the other hand, report reading a median of five books per year, without specific data on daily word acquisition.
Therefore, none of the given options (10, 50, 100, or 200 words a day) can be confidently selected based on the provided research data.The research suggests that capable readers learn to read 10-20 new words per week during the early childhood years. By the age of 5, children understand about 6,000 words and speak 2,000 words.