plants taking in carbon dioxide water changing from a gas to a liquid oxygen converting to cellular energy bacteria removing nitrogen from the atmosphere
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which is a step in the process of photosynthesis?
Possibilities:
- plants taking in carbon dioxide
- water changing from a gas to a liquid
- oxygen converting to cellular energy
- bacteria removing nitrogen from the atmosphere

plants taking in carbon dioxide