Rabindranath Tagore, a renowned Indian philosopher and educator, is known for his significant contributions to education. His educational philosophy is deeply rooted in the holistic development of individuals, emphasizing harmony with nature and the world. Let's explore the four fundamental principles of his educational philosophy:

1. Naturalism: Tagore believed education should follow the natural development of the child. He emphasized learning in an open environment, where students can interact with nature and discover knowledge through experiences rather than rote learning.
2. Humanism: Tagore's humanism focused on the development of the inner self and the expression of human creativity and intelligence. Education, according to Tagore, should not only focus on intellectual growth but also on emotional and spiritual development.
3. Internationalism: Tagore envisioned a world that transcends narrow national boundaries. He advocated for an education system that fosters global understanding and unity, promoting cultural exchange and appreciation.
4. Idealism: Tagore's idealism in education emphasized the pursuit of higher ideals and values. He believed in nurturing students to think beyond material success and strive for personal growth, ethical values, and societal contribution.

Let's evaluate why the other options are incorrect:

• Globalization, Localization, Transformation, Capitalism: These concepts are more related to economic and societal changes rather than philosophical principles of education as envisioned by Tagore.
• Humanism, Commercialization, Urbanization, Hinduism: Although humanism aligns with Tagore's philosophy, commercialization and urbanization contrast his educational ideals, as Tagore focused on spiritual and moral development rather than economic aspects.
• Socialism, Spiritualism, Tourism, Commercialism: While spiritualism may relate slightly to Tagore's views, socialism, tourism, and commercialism do not align with his philosophical foundations.

Hence, the correct answer is Naturalism, Humanism, Internationalism, and Idealism, collectively embodying Tagore's vision for a nurturing and holistic educational framework.