Answer:
C
Explanation:
Unicellular algae can't do photosynthesis because it is a single cell organisms, therefore the answer is C
The correct letter to your answer would be A
Answer : The one diagram which shows the electron with the highest potential energy is attached below.
Explanation : One can easily find the highest potential energy of the atom just by looking at the diagram, the electron which is from farthest distance from the atomic nucleus will have the highest potential energy in the electron.