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Sanitation is the process of:

  1. keeping bacteria alive

  2. destroying only beneficial bacteria

  3. destroying offensive odors

  4. keeping objects clean and sanitary

The correct answer is: keeping objects clean and sanitary

Sanitation is the process of keeping objects clean and sanitary. Option A is incorrect because sanitation involves destroying harmful bacteria, not keeping them alive. Option B is also incorrect because sanitation aims to destroy all types of bacteria, not just beneficial ones. Option C refers to odor control, which is only one aspect of sanitation. Therefore, option D is the best and most accurate description of the process of sanitation.