Final answer:
Navajo sandpainting is integral to Navajo myth, religion, healing practices, and social order, but not primarily related to commercial subsistence as it is a sacred practice, not aimed at economic gain.
Step-by-step explanation:
The role of Navajo sandpainting in Navajo life encompasses several aspects, but one aspect it is not primarily associated with is commercial subsistence. Navajo sandpainting is deeply intertwined with myth, religion, healing practices, and social order. These sandpaintings are not just art; they serve as a significant part of spiritual rituals and are believed to assist in healing and in maintaining balance within the world. They are rooted in the cultural and religious traditions of the Navajo people, reflecting their philosophy of interconnectedness to nature and the universe. Commercial subsistence, on the other hand, pertains to economic activities aimed at providing for one's livelihood, which typically does not involve the sacred practice of sandpainting. Instead, while Navajo art can be sold and traded, this commercial aspect is not the primary function of sandpainting within Navajo culture.