Answer :

The one that would the best would be answer a. 

Answer:

Emit waste

Explanation:

  • Various characteristics are the ones that define a living organism. 
  • One of the important characteristics of life is excretion - this is the ability of the organisms to emit waste products formed as a result of body metabolism, extra waste materials, and other excess materials.
  • Thus, emission of waste is the characteristic of life displayed by the exhalation of carbon dioxide and moisture. 

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