Final answer:
Foreign direct investment (FDI) requires the most amount of equity and creates the greatest risk in terms of foreign market entry.
Step-by-step explanation:
Foreign direct investment (FDI) requires the most amount of equity and therefore creates the greatest risk among the given options. FDI involves purchasing more than ten percent of a company in another country and assuming some managerial responsibility. This type of entry mode has a long-run focus and involves extensive planning and carrying out of transactions. For example, a U.S. firm wanting to buy or sell a company in the United Kingdom may take weeks or even months to complete the process.