Question

in order for the chemical reaction in batteries to continue working, what has to go through the wires? velocity chemicals electrons

Explanation:

Batteries work via electrochemical reactions. For the chemical reaction in a battery to continue, electrons must flow through the wires (this is electric current). Velocity is a measure of speed, not a substance that flows in wires for battery reactions. Chemicals stay within the battery (electrodes/electrolyte), not flowing through wires. So electrons are what move through wires to sustain the battery's chemical reaction.

Answer:

C. electrons (assuming the options are labeled as A. velocity, B. chemicals, C. electrons; if labels differ, adjust but the correct option text is "electrons")