The correct answer is D) Plantae and some Protista
They make their own food through the process of photosynthesis. They don't need outside food like animals do for example. It's only some protista because they are unicellular organisms in general, but some of them like the protophytes can feed on their own because they are basically unicellular algae and also photosynthesize the food using sun and chloroplasts. They are recognizable by being green in color. Other protista organisms can't make their own food.