Choose the correct statement w.r.t. unicellular organisms

Question

$\begin{array}{1 1} (a)\; \text{In unicellular organisms, tissues work in coordination to perform different functions} \\ (b)\; \text{Unicellular organisms do not need food} \\ (c)\; \text{Unicellular organisms respire and reproduce} \\ (d)\; \text{All unicellular organisms move by cilia} \end{array}$