What is the law of conservation of energy?

Question 6 options:

a rule which states that when one form of energy is transformed to another, most energy is lost in the process


a rule which states that when one form of energy is transformed to another, no energy is lost in the process


a rule which states that when one form of energy is transformed to another, all energy is lost in the process


a rule which states that when one form of energy is transformed to another, some energy is lost in the process

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