Final answer:
The lights to be checked in a daily vehicle inspection include alternating lights, parking lights, and directional signals. The type of current used in cars is direct current (DC). Sidewalk ramps and Braille signs are both accommodations required by the ADA and forms of accessibility.
Step-by-step explanation:
The question pertains to the daily inspection of vehicle lights, which is a safety protocol. The correct answer for which lights should be checked as part of a daily inspection is d. All of them. This means that alternating lights, parking lights, and directional signals should all be examined to ensure they are functioning properly and meet the safety requirements. It is crucial for pedestrian safety and for the safe operation of a vehicle.
In terms of other options provided, the type of current used in cars is c. direct current (DC). Electrical systems in cars use DC because it is the type of current batteries can store and provide. Alternating current (AC) is typically used in houses due to the nature of electrical grid systems but is converted to DC for vehicle use, when necessary.
Sidewalk ramps and Braille signs are covered under b. accommodations required by the Americans with Disabilities Act and c. forms of accessibility for people with disabilities; the correct choice would therefore be d. both b and c, as these are designed to make public areas more accessible for individuals with disabilities.