Economics:

According to the theory of portfolio diversification, what is the optimal strategy for minimizing risk?

a$)$ Investing all funds in a single asset class

b$)$ Investing in assets with low expected returns and high risk

c$)$ Spreading investments across different asset classes

d$)$ Avoiding investments in financial markets altogether

What is the primary role of a mutual fund in financial markets?

a$)$ Providing loans to individual investors