Fact 1: Flagella help prokaryotes move. Fact 2: Most prokaryotes are unicellular. Given the two facts above, what helps unicellular organisms move?

Choose your answer from: (1). evaporation. (2). bacteria. (3). heat energy. (4). glucose. (5). sweating. (6). flagella. (7). legs. (8). blood.
The answer is:
(6).