Answer:
C. gains information about the long-term effects of space flight
Step-by-step explanation:
An International Space Station is a laboratory that is in space and is permanently inhabited by human beings who carry out scientific studies and research of a spatial nature. Basically, this station (which orbits the earth and is the residence and place of work of several researchers) has as main objective to provide information about the planet earth and about some experiments carried out with zero gravity. However, its main purpose is to surpass long-term space travel, assessing all the defects, advantages and risks of these trips.