Which group is typically unicellular and includes many protists?

• A. Protists
• B. Plants
• C. Animals
• D. Fungi

Answer: (A)

The main idea here is cellular organization: many protists are single-celled organisms, meaning one cell handles all the needed life processes. Protists are an informal, diverse group of eukaryotes that includes Amoeba, Paramecium, and many algae—organisms that are typically unicellular or form simple colonies. In contrast, plants, animals, and fungi are generally multicellular, with cells specialized into tissues and organs. So this group is the one most commonly composed of single-celled organisms, making it the best choice. Some protists can form colonies or have multicellular stages, but their defining trait in this context is their predominance as single-celled life forms.