Final answer:
When driving with lights and siren, you are requesting, not demanding, that other drivers yield the right-of-way. This is essential for allowing emergency vehicles to reach their destinations quickly and safely.
Step-by-step explanation:
When driving with lights and siren, you are requesting that drivers yield the right-of-way. The correct answer to the question is A. requesting. Although emergency vehicles with activated lights and sirens are granted certain privileges on the road, they are essentially communicating a request for other drivers to yield the right-of-way so that they can proceed quickly and safely to their destination. It's important for all drivers to be aware of this and to take appropriate action when they see an emergency vehicle approaching.