Some methods the scientists could use would be, monitoring the population of prey which the lionfish is known to consume, and also monitor the size/weight of the lionfish in order to understand how and why they are able to flourish.
The correct answer for the question above is letter a. A farmer is trying to improve his crop yields by using a new kind of <span>fertilizer. It describes best the basic science research because it aims to make the the scientific theories better.</span>