Define organ. A)An organ is the smallest living units in the body. B)An organ is the highest level of organization. C)An organ is composed of similar cells working together to perform one or more specific functions. D)An organ is the smallest stable unit of matter and can form molecules. E)An organ is two or more tissues working to perform several functions.

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An organ is defined as a structure made up of two or more types of tissues that work together to perform specific, complex functions in the body. This is what distinguishes organs from other biological levels of organization, such as cells or tissues individually.

Define organ