Question

why are archaea considered prokaryotes? a they have cell walls. b they lack a nucleus. c they are single - celled organisms. d all of the above

Explanation:

Prokaryotes are defined by the lack of a membrane - bound nucleus. While some prokaryotes have cell walls and are single - celled, the key characteristic is the absence of a nucleus. Archaea lack a nucleus, so they are prokaryotes.

Answer:

B. They lack a nucleus.