This is a goofy question. The data would be well modeled by a linear function which includes a constant offset (y intercept). But a quadratic will actually fit the given data a bit better because there's an extra parameter in the model so more opportunity to capture variance.
I can't see the other choices but I'll guess they want us to answer Linear even though I think it's wrong.
If you multiply the number of students times 8 you get 96, but if you multiply the students by 8 you need to multiply the adults by 8 as well. Which leaves you with 16 adults. Is there more to this equation? I feel like this is only part of it.
The weight on Earth is the independent variable. Your weight on the moon depends on how much you weigh on the earth. The more you way on earth the more you way on the moon.
