Question

What is the best definition of inner core?

Answer 1

it is the inner most part of a core.
example the inner core of the earth

Answer 2

Hey there! 

Basically "inner core" is the inward  part of the Earth's core,in other words it is basically the firm shaped of a sphere in the center of core in the planet Earth and it is made out of a iron nickle 

Good luck on your assignment and enjoy your day! 

~LoveYourselfFirst:)