American Depositary Receipts (ADRs) provide U.S. investors with exposure to foreign companies, making D correct. An ADR is a negotiable receipt issued by a U.S. depository bank representing shares (or a fraction of shares) in a non-U.S. company. ADRs trade in U.S. markets and are typically priced and settle in U.S. dollars, which can make foreign investing more operationally convenient for U.S. investors while still offering exposure to the underlying foreign issuer’s business and its home-market risks.

Choice A (Treasury bills) are U.S. government debt instruments and do not provide foreign exposure. Choice B (municipal bonds) are issued by U.S. states, cities, and other municipal entities, so they are domestic. Choice C (SPY) is an ETF designed to track the S&P 500, which is a U.S. large-cap equity index; while some underlying companies may have international operations, SPY is not typically considered a direct “foreign investment exposure” vehicle in SIE terms. ADRs are the clean, direct answer because the underlying issuer is foreign.

On the SIE, ADRs are tested as an equity product type and as a method of gaining international exposure, along with related concepts such as currency considerations (even if ADRs trade in dollars, the underlying business may be exposed to currency and foreign political/economic risk), and the role of depository banks.