You don't have a following space exploration
Find alpha from ωf=ωi+αt
once you have it you can use: τ=Fr=89.0∗.1=Iα
to find I
The answer is the first one. That's because the general theory of relativity is the thing experiencing whatever is experiencing relative to something else. The second answer is just plain wrong. The third answer is just a constant, and doesn't relate to experiencing anything. And the fourth answer is a force between two objects, and it has no second comparison. The first answer is how a subject experiences two different things.