What is the function of the salt bridge? 0 0 C
to allow ions to flow between half-cells
to prevent the flow of anions to the anode
to cause a buildup of charge on the electrode
to impede the electrical circuit by stopping ion flow

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

i'm pretty sure its b i might be wrong though!