Which of the following is an indirect investment vehicle for infrastructure investments?

The choice of listed stocks of infrastructure firms as an indirect investment vehicle for infrastructure investments is correct because this method allows investors to gain exposure to the infrastructure sector without directly owning physical assets or being involved in specific infrastructure projects. By investing in stocks of companies that operate in or support the infrastructure space—such as utilities, transport companies, or construction firms—investors can participate in the potential growth and profitability of the entire infrastructure sector.

Indirect investments typically provide lower risk and more liquidity compared to direct investments in specific infrastructure assets, which can be illiquid and require significant capital, as seen in the other options. For instance, direct real estate ownership represents a direct investment in physical real estate, while private equity in infrastructure projects involves ownership stakes in specific projects, again representing a direct investment. Government bonds may relate to funding for infrastructure but do not provide direct exposure to the performance of infrastructure assets themselves.

Therefore, listed stocks present a practical and accessible way for investors to diversify their portfolios while still benefiting from infrastructure investment trends.