Which is capable of housing astronauts while they conduct research? a rovera satellitea space stationa space observatory

A Space Station

Explanation:

A Rover is a vehicle, having scientific payloads, made to explore extraterrestrial or new territories. A satellite and space observatory go around the Earth or any celestial object and have only scientific payloads on them with no space for the astronauts. A space station is essentially a satellite but big enough that it has enough space for the astronauts to live and work inside it. International Space Station (ISS) is the largest space station with size bigger than a football field. NASA and agencies from 15 other countries are involved in ISS. It works as a laboratory to provide microgravity environment for various research projects related to astronomy, space science etc.

space station is the correct answer