The correct answer is C. Ampere.
An ampere (A) is the SI unit of electric current, which is the rate of flow of electric charge. It is named after André-Marie Ampère, a French physicist and mathematician who is considered one of the founders of electromagnetism.
A newton (N) is the SI unit of force. It is named after Isaac Newton, an English physicist and mathematician who is considered one of the most influential scientists of all time.
A joule (J) is the SI unit of energy. It is named after James Prescott Joule, an English physicist who is considered one of the founders of the science of thermodynamics.
A watt (W) is the SI unit of power. It is named after James Watt, a Scottish inventor and engineer who is considered one of the most important figures in the Industrial Revolution.