To check that there is no vehicle in the blind spot of your mirror, what should you do?

To check that there is no vehicle in the blind spot of your mirror, what should you do?
A)Install a panoramic interior mirror.
B)Adjust the mirrors properly.
C)Briefly turn your head to look through the side windows.Correct
In general, mirrors tend to leave a very dangerous area without visibility, known as the blind spot. When making a lateral movement, you must turn your head a maximum of 45° and briefly look through the side windows to supplement the information from the mirror and be able to carry out the manoeuvre in complete safety.