Which figure is associated with advocating for improved conditions for migratory farm workers?

Cesar Chavez is widely recognized for his significant contributions to advocating for the rights and improved working conditions of migratory farm workers in California and beyond. He co-founded the United Farm Workers (UFW) and played a pivotal role in organizing strikes, boycotts, and protests aimed at highlighting the struggles faced by agricultural laborers. His leadership in the Delano grape strike in the late 1960s brought national attention to the plight of farm workers, emphasizing their need for fair wages, better working conditions, and basic human rights. Through nonviolent methods and grassroots organizing, Chavez became an enduring symbol of labor rights, social justice, and the fight against exploitation in the agricultural sector, making him the correct figure associated with this advocacy.

In contrast, Denis Kearney was an advocate for the working class in the late 19th century, known more for his anti-Chinese sentiments. James Marshall is famous for his role in the California Gold Rush and Leland Stanford, although a notable figure in California's history as a businessman and politician, was not specifically involved in the fight for farm workers' rights.