Derek Has Just Invented a New Game to Play with His

question 25

Multiple Choice

Derek has just invented a new game to play with his 18-month-old daughter,Beth.In the game,Derek distorts his facial features and makes an unusual noise.Then,it's Beth's turn to do the same thing.This activity,which is enjoyed by both Beth and Derek,illustrates

• A) launching.
• B) scaffolding.
• C) possible selves.
• D) negative reinforcement.

---

Definitions:

U.S. Dollars

The official currency of the United States, widely used as a standard of exchange in international markets.

Exchange Rate

The value of one currency for the purpose of conversion to another, dictating how much one country's currency is worth in terms of another's.

Australian Dollar

The currency of Australia, which is also used by several other Pacific Island nations.

Exchange Rate

The value at which one currency can be exchanged for another currency, which can be determined by the market or specified by the government.