Question

_____ are believed to be the ancestors of the protists and first eukaryotes.

Answer 1

The answer to the question is A 

Answer 2

Answer: B, Archaea

Explanation: The Archaea microbes are believed to be the ancestors of the protists, and also the first eukaryotes. They obtain most of their energy from sulfur, salt, hydrogen, and carbon dioxide. They also tend to be more tolerant of extreme environmental conditions, they are often found where most other life is unable to exist such as at the bottom of the sea or in volcanoes.