villi is the pleural of villus and villus refers to the finger or thread like projections of specific membranous structures often serving in the capacity of increasing surface area and to facilitate the passage of fluids or nutrients
Answer:
I want say B but i don't really know I'm sorry if I'm wrong and I hope I help you
Alliteration
Explanation:
Many words begin with "S" or "B".
(C) Problem-Solution I believe. I hope this helps.
