Please if anyone could help with these. I would be really grateful. Please give the right answers.

Which is these is not a benefit of parallel structure? a)clarity b)classification c)emphasis d)balance

Read the excerpt from”do not go gentle into that good night” which statement best describes the effect of the refrains in this excerpt?

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.