Question

what does high resistance mean?
electrons flow through a wire without touching each other.
electrons flow backwards through the circuit.
electrons are squeezed together, creating friction as they flow.
electrons have an easy time completing the circuit.

Explanation:

Resistance in a circuit is related to how difficult it is for electrons to flow. When electrons are squeezed together, there is more friction (which is what resistance essentially is - a measure of opposition to electron flow). If electrons flow without touching (low interaction, less friction), that would imply low resistance. Electrons flowing backwards is not related to the concept of high resistance in the context of what resistance fundamentally is (a property opposing normal electron flow in a circuit, not direction reversal). And electrons having an easy time (low - friction flow) is low resistance.

Answer:

Electrons are squeezed together, creating friction as they flow.