<u><em>I chose "Option C" because it has a constant rate of change. Now, "Option D" may be a possibility, but instead of adding, it is multiplying. The below answer said that "Option A" is a possibility, but I disagree with that. It does not have a constant rate of change at all. "Option B" is also not a possibility because it is increasing after 2 values in the "y graph" than decreasing. And that is never a possibility.</em></u>