The correct option is "1 and 3 only" because Trade-Related Investment Measures (TRIMS) specifically prohibit quantitative restrictions on imports by foreign investors (statement 1), aiming to ensure that foreign investments do not lead to unjust trade barriers. However, TRIMS focuses on the investment measures that affect trade in goods, rather than directly pertaining to services (statement 2 is incorrect), and does not regulate the foreign investment itself but rather the consequential trade measures (statement 3 is correct). Thus, statements 1 and 3 align with the objectives of TRIMS as it seeks to create a fair trading environment while allowing for foreign investments.