Why customer service professionals use paraphrasing?

Idon’t understand 8. plz ! we are finding the area of polygons. thx in advance!

Which is the best investment option for a person who wants to make a long-term,tax-free investment? a.traditional ira b.roth ira c.401(k) d.money market account

Which statement best describes lymph? a. a clear fluid that carries proteins, water, white blood cells, fat, dead cells, and toxins that drain from the fluid between the cells of the body b. a clear fluid in the cells that to secrete and transport hormones from one region of the body to another c. a thick, opaque, and yellowish fluid that is present when there is an infection in the body d. a clear, liquid component of blood that contains red blood cells, white blood cells, platelets, and iron