Earth’s inner core is a. a dense ball of solid metal. b. a layer of molten metal. c. a layer of hot rock. d. a layer of rock that forms earth’s outer skin. select the best answer from the choices provided a b c d

The right option is; a. a dense ball of solid metal.

Earth’s inner core is a dense ball of solid metal

The earth’s inner core is the most interior (center) part of the earth and it is primarily a dense solid ball that has a radius of about 1,220 km (760 mi). The earth’s inner core is chiefly made up of an iron–nickel alloy (metal) and some other elements and its temperature is about 5400 °C which is the same as that of the surface of the Sun.