Final answer:
To confirm if a driver can see you, position yourself to see their eyes in the rear-view mirror; do not assume visibility without this confirmation.
Step-by-step explanation:
To know if a driver can see you in their rear-view mirror, you should c. Position yourself to see their eyes. If you can see the driver's eyes in their mirror, it is likely that they can see you as well. It is not recommended to assume that the driver can always see you. Honking your horn or waving your hand could be mistaken for other signals and does not guarantee that you are in the driver's field of vision. Safety should always be the priority, so making sure you establish eye contact through their mirrors is the best way to confirm visibility.