See yoh will have to look on a map which you will know all the continents so it would really be up to you what the answer may be
I would say that the Rocky Mts were the youngest of all these mountain ranges as they were created between 80-55 million years ago during the Laramide Orogeny and also they are generally much taller than the other mountain ranges mentioned here which is a characteristic of young mountain ranges and their features are sharper as they haven't been eroded the way most of these others have so have been subject to erosion for less time than the others.
The answer is Option B, International Space Station.
Project gemini and mercury were for orbits around the earth (without docking) and Project Apollo was to fly to the moon.
Each snowflke has a unique pattern, unlike any other.