Q. Consider the following economic concepts:

1. Giffen Goods
2. Veblen Goods
3. Lorenz Curve
4. Tobin Tax

How many of the above are directly linked to consumer behavior in the market?
Answer: Only two
Notes: Giffen Goods and Veblen Goods are directly related to consumer behavior, as both involve atypical demand patterns in response to price changes. Lorenz Curve measures income inequality, and Tobin Tax is a fiscal tool on financial transactions; neither is linked to consumer demand directly. Thus, only two concepts from the list are directly related to consumer behavior.