Tell about a time you got credit for something

Could someone me with this question?

Which best explains how this excerpt creates suspense it develops the plot using dialogue instead of description. it explains that the fishermen have found two graves on the island. it shows that manjiro is a character who asks a lot of questions. it includes a question that the reader will want to know the answer to.

According to warren in the brown opinion, how did conditions change between the time the fourteenth amendment was adopted and the time the supreme court considered brown v. board of education?