Answer:
It could be a bird - peacock
Answer: Commensalism
Explanation: Well you can already eliminate parasitism because that is when an organism leeches off another. Mutualism is when one organism needs to depend on another compared to A where both are benefited. Then you can eliminate d because competition is when two organism compete with each other for survival not benefiting them both.
Enzymes are catalysts, meaning that they are proteins that speed up reactions. So without them, there would be barely any activity.
The answer is B
hope this helps
C-Placing key events of the French Revolution in chronological order.