Final answer:
You buy electric energy from your electrical company, which is measured in kilowatt-hours (kWh) as reflected on your electric bill.
Step-by-step explanation:
When dealing with what you buy from your electrical company, it's important to understand a few key concepts related to electric energy and power. Electric energy is the total amount of work done by electric forces, which depends on both the voltage and the charge that is moved. Electric power, on the other hand, is the rate at which this energy is transferred or used. In formulas, electric power is described as P = IV (Power equals current times voltage).
Your electric bill reflects your consumption in units of kilowatt-hours (kWh), which is a measure of electric energy. Therefore, when asking, What do you buy from your electrical company? The correct answer is A. energy, because that is what is actually being transferred to your home and used to power your appliances and electronics.