First Wave Feminism primarily advocated for which of the following?

First Wave Feminism, which emerged in the late 19th and early 20th centuries, primarily focused on legal issues and inequalities, particularly those related to women's suffrage, education, and family rights. This movement sought to secure women the right to vote, access to higher education, and improved legal rights within marriage and family structures. The emphasis was on addressing the basic rights that were restricted or denied to women at that time, laying the groundwork for future feminist movements.

The option regarding universal basic income pertains to economic liberties that became more emphasized in later waves of feminism, typically in the context of addressing broader social justice issues. Legalization of abortion and environmental protections were crucial concerns of subsequent feminist movements, particularly in the second and third waves, where reproductive rights and ecological justice became more prominent. Thus, the choices offered do not align with the specific priorities and goals of First Wave Feminism as accurately as the option focused on suffrage, education, and family rights.