Which kingdom(s) contain only unicellular prokaryotes? (Select all that apply.)

Explanation:

The two prokaryotic kingdoms are Eubacteria and Archaea. A prokaryote is a relatively simple single-celled organism; more complex organisms (including all multi-celled organisms) are eukaryotes. Previously, there had been only one kingdom of prokaryotes, known as Monera.

answer; i believe that the correct answer is (participation);