I believe that it's an exhausted bear. Cellular respiration is the way plants and animals receive energy. If the bear is exhausted, it means it's cellular respiration is lacking.
The scenario that most likely reveals an organism lacking the proper reactants for cellular respiration is option C, an exhausted bear. This indicates the bear is unable to generate adequate energy, possibly due to insufficient food and oxygen. The lack of energy from cellular respiration can lead to exhaustion in animals.
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