The correct answer is option 2.

Option 1 states that the Missile Technology Control Regime (MTCR) is an informal and voluntary partnership initially formed among G-7 countries. This statement is correct. The MTCR was indeed established in 1987 by seven countries, including the United States, Canada, France, Germany, Italy, Japan, and the United Kingdom, which were all part of the G-7 at that time.

Option 2, which is the correct answer, states that members of the MTCR prevent the proliferation of missile and unmanned aerial vehicle technology capable of carrying above 500 kg payload for more than 300 km. This statement is incorrect. According to the MTCR guidelines, member countries actually prevent the proliferation of missile systems capable of delivering weapons of mass destruction (WMDs), including those that have the capability of carrying a payload of at least 500 kg for more than 300 km. The MTCR does not specifically focus on unmanned aerial vehicles (UAVs).

Option 3 states that China applied to join the MTCR but members did not offer membership. This statement is correct. China did apply for membership in 2004, and although its application was not accepted at that time, it