Final answer:
Ruthie thought that Frida Kahlo was the guardian angel of wounded artists because of her support for emerging artists.
Step-by-step explanation:
Ruthie thought that Frida Kahlo was the guardian angel of wounded artists (d) because of her support for emerging artists. Along with her husband Diego Rivera, Kahlo supported Mexican political and cultural nationalism, and she used her influence and resources to help promote and mentor young and emerging artists. Kahlo's support for emerging artists demonstrated her dedication to nurturing and uplifting the artistic community, making her a guardian angel in the eyes of Ruthie and others.