Final answer:
Organisms that live in extremely hot or acidic environments are generally found in the domains Archaea and Bacteria, with Archaea being particularly known for extremophiles that thrive in such conditions.
Step-by-step explanation:
The organisms that live in extremely hot or acidic environments belong to the domains Archaea and Bacteria. Therefore, the correct answer is c) 1 and 2 (Archaea and Bacteria).
Both Archaea and Bacteria are prokaryotic, single-celled organisms that can reproduce asexually. They are similar in structure but have significant differences, such as the composition of their cell walls. Archaea's cell walls do not contain peptidoglycan, in contrast to bacterial cell walls. Additionally, many Archaea are extremophiles, thriving in environments that are inhospitable to most life forms, such as hot springs, geysers, and salt flats. While some bacteria can survive in extreme conditions, it is the Archaea that are particularly known for their ability to live in extremely hot or acidic environments.