Writing can be thought of as a form of communication.
The question is asking how you will deal with the problem (in this case flooding) and what you could do to fix the damage it causes.
Example: Plant vegetation, because it can reduce the height of flooding, according to this website: http://www.bbc.com/news/science-environment-35777927
A.Television
If you whis to reach large number of audiences with your demostration of how to identify the differences between various types of insects the best way is with the television as it is the medium with the most current rating.