The Stevens Treaties are still considered legal agreements today primarily in the context of tribal fishing and hunting rights. These treaties, signed in the 1850s between Governor Isaac Stevens and various Indigenous tribes in Washington Territory, established certain rights for these tribes, including the right to fish, hunt, and gather on their traditional lands.
While some of the other statements you've provided touch on aspects of the relationships between tribes, farmers, and land use, they do not directly reflect the ongoing legal status of the Stevens Treaties. The key point of legal relevance is the recognition and protection of tribal fishing and hunting rights as stipulated in these treaties, which continues to be upheld in courts and negotiations today.
Therefore, the correct option would be: Tribal fishing and hunting rights must still be respected.