Answer:
b. They benefit from an expanded opportunity set.
Step-by-step explanation:
Recently, financial market have become highly integrated, which help investor to diversify their portfolios internationally.
International portfolio help the investor to focus on foreign marketĀ“s securities to invest, it add exposure of portfolio to the growing and developed market. As firm is going global to expand opportunity set, so that it can earn more benefit out of diversified market, similarly, investor are going global by diversifying their investment opportunity.