Question

which best describes the purpose of the international space station?
to conduct research
to end wars
to shield earth from asteroids
to connect the world to space

Explanation:

The International Space Station (ISS) is a research platform in low - Earth orbit. It is used for scientific experiments in various fields such as microgravity physics, biology, and Earth observation. There is no indication that it is used to end wars (it is a scientific and peaceful project), shield Earth from asteroids (no such defensive mechanism is part of its design), or its main purpose is not just to "connect the world to space" in a non - research sense. Its core function is research.

Answer:

to conduct research