The three main groups, or domains, of organisms are:

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The three main domains of organisms are bacteria, archaea, and eukaryotes. Option A includes fungi in addition to animals and plants, which are all eukaryotic. Option B is incorrect because bacteria are prokaryotic, and plants and animals are eukaryotic. Option D is incorrect because archaea are not prokaryotes; they are their own distinct group of organisms. Option E includes protists instead of archaea, which is a less inclusive group.

The Three Main Groups, or Domains, of Organisms Are