The correct answer is option 1: Six years. The Jammu and Kashmir State Legislative Assembly, like most state legislative assemblies in India, has a tenure of six years. This means that once the assembly is elected, its members will serve for a period of six years before the next election is held. During this time, the assembly members are responsible for representing the interests and concerns of their respective constituencies, as well as participating in the legislative process by proposing and debating laws. It is important to note that the tenure of state legislatures may vary across different states in India, but in the case of Jammu and Kashmir, it is six years.