Is a symbiosis where both parties benefit.

parasitism

commensalism

mutualism

all of the above

C.) "Mutualism"  is a symbiosis where both parties benefit

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An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.

Ithink the answer is d.