Special effects . because it brings more attention .
A mango tree is mentioned so I would say a mango
A is the best answer, a visual aid would help most in this situation.
To persuade the reader to do something or to try something out. For instance,
if I asked you to start recycling instead of saying, "You should start recycling", I am going to try to persuade you into recycling like, " if you recycle you are saving the environment", see the difference?