Correct Answer: Ti

Solution : The correct option is Ti.

Titanium is frequently utilised to endure high temperatures in spacecraft and aeronautical applications. Titanium has outstanding heat resistance qualities, retaining structural integrity and strength even at high temperatures. It is also lightweight, which is important for spaceship design since it reduces total weight and improves fuel economy. Furthermore, titanium's corrosion resistance and endurance make it a suitable material for space exploration under severe situations.