Final answer:
The electrolyte of a nickel-cadmium battery is the lowest when the battery is in a discharged condition.
Step-by-step explanation:
The electrolyte of a nickel-cadmium battery is the lowest when the battery is in a discharged condition.
Nickel-cadmium (NiCad) batteries contain a cadmium anode and a highly oxidized nickel cathode. During the discharge of a NiCad battery, the cathode undergoes a reduction reaction. This reduction reaction consumes the electrolyte, leading to a decrease in its concentration.
Therefore, option B, in a discharged condition, is the correct answer.