Respuesta :

I think the correct answer is "Archaebacteria". The kingdom which is completely composed of unicellular organisms that are prokaryotic is the kingdom of Archaebacteria. There are three major groups in this kingdom called methanogens, halophiles, and thermophiles. 

Answer:

A) Eubacteria

Explanation:

The Eubacteria Kingdom is made of unicellular prokaryotes. Fungi, Plants, and Protists are composed of eukaryotic cells.

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