I would say the first and the last choices
I believe it's about 23.4 percent so in this case (B. 25) but I'm Not 100% Sure!
My Apologies if incorrect! =( =)
Seeing as he is frustrated with them, and frustration is commonly associated with headaches, he would like feel C. Headache.
In order to become a herbalist, you need to have a basic understanding of herbs. Also, you need to train to be a herbalist(go to college, university,etc.). You can start learning about plants/medicine.