Which is the best source for learning about new words

Read the excerpt below from "letter from birmingham jail" and then answer the question below: "my citing the creation of tension as part of the work of the nonviolent resister may sound rather shocking. but i must confess that i am not afraid of the word "tension." i have earnestly opposed violent tension, but there is a type of constructive, nonviolent tension which is necessary for growth. just as socrates felt that it was necessary to create a tension in the mind so that individuals could rise from the bondage of myths and half truths to the unfettered realm of creative analysis and objective appraisal, so must we see the need for nonviolent gadflies to create the kind of tension in society that will men rise from the dark depths of prejudice and racism to the majestic heights of understanding and brotherhood." how does king's repetition of the term "tension" impact the meaning of the text? question 5 options: dr. king says that he is afraid of the word tension and he doesn't think it is necessary. dr. king repeats the word tension to explain how he sees the word as a negative force that discourages change. dr. king repeats the word tension unintentionally, and it doesn't impact the meaning of the text. dr. king repeats the word tension to support how he views the word tension as positive and growth-producing.

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.

Besides the revisions listed in the paragraph, what else can deepak do to strengthen his paper?