Answer: It is because it makes it more efficient to study organisms.
Explanation: Biologist classify organisms by considering similarities between them. The organisms which have closely related characteristics are placed in a separate domains by biologists. Domains are further divided into 6 Kingdoms. According to modern classification system, domain is largest unit of biological classification.
I’m pretty sure the answer is c. Protista. Hope this helps!
I’m pretty sure it’s B. Relative saying
B according to my school.