Final answer:
A service provider should offer assistance and ask for preferences when dealing with a customer who uses a wheelchair.
Step-by-step explanation:
When dealing with a customer who uses a wheelchair, a service provider should offer assistance and ask for preferences. This is because the Americans with Disabilities Act (ADA) requires service providers to provide accommodations and accessibility for people with disabilities. It is important to treat individuals with disabilities the same as others and not make assumptions about their needs or abilities.