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A pathogen would most accurately be described as a:

  • A.parasite
  • B.commensal
  • C.saprobe
  • D.symbiont

Answer: A

Correct answer: parasite

A pathogen lives at its host’s expense and causes harm, which is the definition of a parasite. A commensal benefits without harming, a symbiont in the mutualistic sense benefits both partners, and a saprobe lives on dead organic matter.

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