Which sentence contains a correctly punctuated nonrestrictive modifier?

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.

Based on the speaker's viewpoint, whichstatement would he likely disagree with? imagination can be used to gain knowledge.individual knowledge is verified by experttestimony.true knowledge comes from thinking foryourself.knowledge comes from separating yourselffrom the crowd.education does not need to happen in alecture hall.

What do advice means in the dictionary?