Which of these is a correct step in constructing congruent angles? a)Use a straightedge

Which of these is a correct step in constructing congruent angles? a)Use a straightedge and draw an are across the first are from a leg of the given angle.
b)Use a straightedge to measure the width between the points where the first arc cuts both legs of the given angle.
c)Use a compass and draw an arc across both the legs of the given angle.
d)Use a compass and join points to make the new leg of the congruent angle.