Answer: THIRD OPTION.
Explanation:
Given the trapezoid in the figure, you know the coordinates of two points:
(0,c) and (a,b)
You can observe that the point (a,b) and the point P have the same x-coordinate, because both points are "a" units from the origin.
Then, the x-coordinate of P is:
![x=a](https://img.qammunity.org/2020/formulas/mathematics/high-school/vlc205oi2c40i26lpmccnd13zis661dk3y.png)
Now, in order to find the y-coordinate of the point P, you need to remember that when the line touches the x-axis, the value of "y" is equal to zero. Therefore, the y-coordinates of the point P is:
![y=0](https://img.qammunity.org/2020/formulas/mathematics/high-school/b792qjogr8s4ujwepli4crk8crr7izzend.png)
Then the answer is:
![(a,0)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ewkj2tfoghu9zj1p2g4waibhmxogz2cl2a.png)