A unicellular microorganism was recovered from a hot spring (95°C) in Wyoming. The cells lack a nucleus, have a cell wall that lacks peptidoglycan, and have 70S ribosomes. Analysis of the plasma membrane reveals that the lipids contain long-chained branched hydrocarbons with ether linkages. Based on this description, select the group in which this organism would be classified. a. Fungi
b. Bacteria
c. Protist
d. Archaea