The answer would be : to show the audience that he knows about many uses for herbs.
Hope this helps !
Photon
I would say D is more appropriate. It's possible she has interest, and that is the root of her observations, but adoration is clear by her vivid, positive description.
Answer:
Fact
Explanation:
It is not a opinion; there are no arguments, nothing about what the person thinks, and it's stating a fact.