at sea level in outer space on mountain tops at higher latitudes
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Some scientists study images of very distant celestial bodies. Where is the best location for the types of telescopes that can provide the scientists with the clearest images.
Possibilities:
- at sea level
- in outer space
- on mountain tops
- at higher latitudes

in outer space