Concept:The inner core of the Earth is a dense, solid metallic centre composed mostly of iron and nickel.
Explanation:Scientists study seismic waves and the planet's total density to understand the interior layers of the Earth.
This evidence shows that the inner core is dominated by metallic iron.
Nickel is the second most abundant component present in the core.
Lighter elements such as sulphur, oxygen, or silicon may also occur, but only in very small amounts.
Hence, the pair of minerals that forms the bulk of the Earth’s inner core is iron and nickel.
Answer:C. iron and Nickel