barbara invested in the japanese stock market this year. Even if the Japanese stock market does not increase in value, Barbara could have a positive return if the Japanese yen depreciates barbara will definitely have a higher return than she would have had if she only invested in US stocks because she will benefit from diversification barbara could have a positive return if the Japanese yen appreciates the volatility of barbaras portfolio will be higher than if she had just invested in US stocks because she is now diversified