Which is an opinion? a) sometimes crewmembers jog on treadmills or play games of low-gravity basketball to keep their bodies in tiptop shape. b) when it’s mealtime, the astronauts make their way to the galley where they add water to their freeze-dried food and beverages at a hydration station. c) the international space station is a wonderful joint effort between the united states, canada, russia, japan, brazil, and the countries of the european space agency. d) though the astronauts’ main concern is completing daily experiments and maintenance tasks, they still need to eat, sleep, and play just like everyone else on earth.