What are the three main parts of the geosphere?

lithosphere, crust, core
hydrosphere, crust, core
lithosphere, mantle, core
crust, mantle, core

There are many spheres aside the geosphere; like the atmosphere, hydrosphere, lithosphere and many others. But the geosphere is the earth itself. It is the solid part of the earth.
The three main parts of the geosphere:
1. Crust
2. Mantle
3. Core

Yes because i am a god

option a is correct i.e.

only sodium ions can pass through the membrane.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.