after a drought after a heat wave after a forest fire after a tornado
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A serotinous cone is a seed enclosure that requires intense heat to open. When would a population of trees most benefit from having serotinous cones?
Possibilities:
- after a drought
- after a heat wave
- after a forest fire
- after a tornado

after a forest fire