By the Age of 10 Months, an Infant Will Generally

question 147

Multiple Choice

By the age of 10 months, an infant will generally

• A)use only the phonemes of the native language of adult speakers around them.
• B)be in the cooing stage of vocalisation.
• C)have a vocabulary of approximately 100 words.
• D)speak in two-word "sentences".

---

Definitions:

Average Total Cost (ATC)

The average expense per unit of output, calculated by dividing the overall production cost by the amount of output generated.

Average Total Cost Curve

A graphical representation showing the average total cost of producing different quantities of a good or service.

Per-Unit Cost of Production

The total expense incurred in producing a single unit of a product, including both fixed and variable costs.