Answer : Option C) Rock Cycle.
Explanation : Rock cycle is a basic concept in geology which deals with the time-consuming transitions that occurs through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. It does not involves living organisms in this cycle.
Rest all the other cycle involves living organisms, carbon cycle has indirect impact of humans on it as it deals with the photosynthesis and the metabolism activities.
Oxygen cycle deals with the circulation of the oxygen through various forms in the nature including humans.
Nitrogen cycle involves nitrifying bacteria which converts the atmospheric nitrogen into ammonia and then convert it to nitrites for the use of plants.
