76. In order to protect the lawful rights and interests of migrant workers, the labor department of Area A "tailored" migrant workers' rights protection cards for migrant workers, and compiled the rights and obligations of workers, labor dispute resolution steps, and consultation telephones. The card is issued to migrant workers during the Spring Festival. Once the legitimate rights and interests of migrant workers are violated, the migrant workers' rights protection card can be used to efficiently and conveniently appeal to the labor department where the migrant workers are located. Which one of the following is most conducive to the effectiveness of the workers' rights protection card? ['Similar initiatives in the labour sector of B have been successful.', 'This initiative has received strong support from the leaders of the labor department in Area A.', 'The labor department in the first place has a long-term cooperative relationship with the labor department where the workers are located.', 'The labor department where the migrant worker is located provides a full range of services for migrant workers who hold a migrant rights card for free.']