What services does the postal service offer in cooperation with other government agencies?

The correct answer reflects the collaboration between the postal service and other government agencies to provide essential services that are highly demanded by the public. Specifically, passport applications and burial flags represent tangible services that directly serve the community’s needs. The postal service often acts as an accessible point for citizens to apply for or obtain passports, ensuring that international travel documentation is more easily attainable. Additionally, burial flags, which are issued to honor deceased veterans, are another important service that reinforces the postal service's commitment to supporting veterans and their families.

Options related to driver's licenses, vehicle registrations, Social Security applications, voter registration, and tax preparation services do not typically fall within the scope of services provided by the postal service in collaboration with government agencies. These tasks are generally handled specifically by state motor vehicle departments or other federal agencies, making them less relevant in the context of postal service offerings. Thus, the cooperation highlighted in the correct choice emphasizes a clear and well-defined range of services that aligns with the postal service's operational role in assisting citizens with critical governmental functions.