Which of the following is a common requirement when driving in Washington State?

Driving in Washington State requires all drivers to maintain valid vehicle insurance, making this option the correct choice. This legal stipulation is primarily designed to protect all road users in the event of an accident. Having insurance ensures that in the case of damages or injuries resulting from a collision, there is a financial backing to cover costs. Washington adheres to a mandatory insurance law that includes both liability coverage and, in certain circumstances, personal injury protection.

Other options present requirements that do not align with the state's driving laws. The use of headlights during the day is not a statewide requirement; however, it is encouraged for safety. Wearing a helmet is specific to motorcycle riders and does not apply to driving a car. The notion of having a passenger monitor your speed is not a legal requirement in Washington; drivers are expected to manage their speed independently, relying on their judgment and adherence to posted limits. Each of these alternatives either misunderstands specific regulations or misapplies safety recommendations.