Multiple choice

What material(s) make up the Earth's core?

  1. iron & nickel

  2. iron & basalt

  3. magnesium

  4. granite

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A Correct answer
Explanation

The Earth's core is primarily composed of an alloy of iron and nickel. Basalt and granite are rocks found in the Earth's crust, while magnesium is a major component of the mantle but not the primary constituent of the core.