The closer you get to the vehicle you want to pass, the less you can see ahead; this is especially true when passing trucks, trailers, and other large vehicles.
b. before you pull out to pass, check your blind spots and make sure that you have plenty of time and room to pass.
c. do not return to the right side of the road until you can see the tires of the vehicle you passed in your rearview mirror.
d. all of the above