Final answer:
C. recycled. Magnesium-thorium alloys from aircraft are typically recycled into new electronics or recycled in peripheral nations.
Step-by-step explanation:
Magnesium-thorium alloys from aircraft are typically recycled. Recycling is the process of converting waste materials into reusable materials. In the case of magnesium-thorium alloys, they can be repurposed into new electronics or recycled in peripheral nations. This helps to conserve resources and reduce the environmental impact of disposing of these alloys.