Energy is best defined as the ability to do work, which highlights its role in causing changes and performing tasks in various forms. The other options are either descriptions of work, power, or specific types of energy. Therefore, option B is the correct choice.
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Energy is best defined as the ability to do work, which encompasses various forms of energy. Other statements provided either pertain to work, power, or specific types of energy. This definition is crucial in understanding how energy operates in different systems. ;