[Solved] When choosing what voice to use in a text, the author should consider A) purpose B) audience C) both A and B D) none of the above Carbonate Rock: Sedimentary rocks, such as limestone, that are composed primarily of carbonate minerals. Microscopic Organisms: Tiny life forms, often unicellular, that are not visible to the naked eye and require a microscope to be observed. Mass Extinction: Mass Extinction is an event in which a significant, widespread, and rapid decrease in the biodiversity on Earth occurs, often due to catastrophic environmental changes. Extinction Event: A significant, widespread, and rapid decrease in the biodiversity on Earth, often characterized by the disappearance of a large number of species in a relatively short period.