The demand for the product; weather there is a similar product out there; is it a special edition or limited product.
The answer is either the first or last one all X intercepts have a Y of zero, you did not give enough information to determine if it is negative or positive for the X value but if the X intercept is on the left side of the Y axis that means that it is the first answer if it is on the right side it is the last answer.
Are you supposed to do it in past tense?
Then it would be:
13. Fit
14. Ran
15. Fed