A. M checkpoint
I just answered this question doing a test on Plato.
The Protist Kingdom<span> mostly has unicellular </span>organisms. Protists are <span>mostly unicellular, few multicellular, eukaryotic, can be </span>heterotrophic<span> or </span>autotrophic<span>.</span>
The answer is D, because it is a form of camouflage and an adaptation to the environment for self defense