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Wireless Sensor Networks (WSNs) are communication networks having tiny sensors with sensing and transmitting capabilities. These systems adopting traditional routing protocols to organize communication, have design issues, and quality of service is still a challenging research factor. The key idea of this research is to discover the most efficient routing protocols based on the design of a reliable and efficient routing protocol to determine quality of services in a WSN. In this paper we propose a reliable and efficient path selection strategy by designing a Quality of Service Aware multicast routing protocol. This protocol discusses the multicast routing problem of WSN with multiple QoS constraints, by discovering a minimum resource consumption path while satisfying multiple constraints optimization conditions. Simulation results show that the fair link selection strategy can yield to a good solution for this traditionally NP complex problem, as compared to the best multicast algorithms known. [ABSTRACT FROM AUTHOR]