Which of the following is both unicellular and microscopic? a. Algae b. Helminth c. Bacteria d. Fungi

The correct answer is c. Bacteria.<br /><br />Bacteria are unicellular organisms that are microscopic in size. They are single-celled organisms that can be found in various environments, including soil, water, and even inside other organisms. Bacteria are prokaryotic, meaning they lack a true nucleus and other membrane-bound organelles. They reproduce through binary fission, a process in which a single bacterial cell divides into two identical daughter cells.<br /><br />On the other hand, algae, helminths, and fungi are not both unicellular and microscopic. Algae are primarily multicellular, although some species are unicellular. Helminths are multicellular parasitic worms. Fungi can be both unicellular (such as yeasts) and multicellular (such as molds and mushrooms).