What audience is this media message targeting? which aspect of the video best conveys who the target audience is? which line of dialogue most likely has a persuasive effect? what is one way the video uses sound to emphasize the message?

Which of these can an adverbial clause modify?

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were a 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.

Why did the author of "how to jump-start a car battery" choose to use this image?