Question

A laboratory investigation included examining prepared slides of pond water. Single-celled organisms with a nucleus and either cilia or flagella were visible. These organisms probably belong to the kingdom _______. A. Animalia B. Protista C. Fungi D. Plantae

Answer 1

B. Protista

Step-by-step explanation:

Protista kingdom consists of simple eukaryotic organisms, usually composed of a single cell or a colony of similar cells.