Graph the function y= x + 25 with the specified window choose the correct graph below

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

How do i do this? i don’t understand

Which one ? is the answer and how to find this answer