I don’t even get the question but plz help lol

Answer:
2nd choice: constructing a line perpendicular to a given line
Step-by-step explanation:
a. Place your compass on the given point (point P)
b. From each arc on the line, draw another arc on the opposite side of the line
from the given point (P)
c. Use your ruler to join the given point (P) to the point where the arcs
intersect (Q)