Final answer:
Jean Tinguely is best identified as a kinetic sculptor due to his involvement in kinetic art, which involves moving sculptures powered by mechanisms.
Step-by-step explanation:
Jean Tinguely is known for his works that integrated the movement, capabilities, and noises of machines into art. His quote, "The only stable thing is movement," hints at his affiliation with kinetic art, a movement that embraced the dynamic and mechanical aspects of sculpture. Tinguely was a core member of the kinetic art movement, creating sculptures that moved with the aid of motors and incorporating found objects into his pieces. This association with the pioneering kinetic art exhibition 'Le Mouvement' in 1955 and his contributions to the development of this art form solidify his position as a kinetic sculptor.