Link to answer: http://handest.weebly.com/uploads/1/3/4/8/13487611/dna_and_protein_synthesis_practi_1.pdf
Answer:
Your answer is going to be a niche.
Explanation:
Multicellular organisms can be much larger and more complex. This is because the cells of the organism have specialized into many different types of cells such as nerve cells, blood cells, muscle cells all performing different functions. So, most likely, a pond organism is unicellular.
Hope this answers your question
I am pretty sure that the answer is D.) 50%