I believe the answer is Medusa Stage.
Medusa is <span> form of cnidarian which body is very similar to an umbrella and they are able to free swimming around the environment unlike the other type and hey also tend to have tentacles to catch their preys. One example of this is Jellyfishes.</span>
The answer to this question is A product page
Answer: Production possibility frontier (PPF).
Explanation: PPF is curve on a graph which depicts the situation which you have asked in a question. For your ease i will upload a picture of that curve so that you can understand the answer better. For better understanding the graph below uses the example of Cotton as a good.