A functional text is a text to fulfill a certain function, such as instruction manual or description of getting somewhere. A dialogue would be too confusing and redundant for this purpose; the best functional text would simply describe the information it needs to provide in a clear manner.
SHe is curious about nature and has a since of wonder in life.
I would say the answer is he should prepare a presentation for a general audience by providing some standard information and by defining concepts without oversimplifying.hope this helps!
