First thing you need to do to answer this question, is to observe it carefully. The question asks for the most "accurate", not the "correct" answer. That's . because in nature and in biology, there are always some exceptions.
All protists are unicellular and microscopic in nature - this is not that accurate, because there are some very noticeable exceptions.
They have organelles, so protists are eukaryotic in nature - this is correct, since protists are indeed eukaryotic.
All protists make their own energy through photosynthesis - the accuracy of this statement is 0, since not all protists make their own energy that way. Metabolism-wise, protists can be photoautotrophs or chemoheterotrophs to be accurate.
Hope it helped,
BioTeacher101
