Question

if earth was like a hardboiled egg, which part of earth would the egg shell represent and why?
crust, as its depth is less than 100 kilometers
mantle, as its depth is less than 100 kilometers
mantle, as its depth is up to 3,000 kilometers
crust, as its depth is up to 3,000 kilometers

Explanation:

The crust is the outermost layer of the Earth, similar to the eggshell of a hard - boiled egg. The depth of the Earth's crust is relatively thin, less than 100 kilometers in most places, just as the eggshell is a thin outer covering of the egg.

Answer:

Crust, as its depth is less than 100 kilometers.