Arturo needs to write an explanatory text on how the human circulatory system works. Which of the following paragraphs would be the best introduction for his topic?

A. The human circulatory system causes blood to circulate throughout the body. It is an amazing system.
B. Of all the systems in the human body, the circulatory system may be the most complex. To understand it completely requires many years of study.
C. The heart is the main component of the human circulatory system. It beats from 60 to 100 times per minute, about 100,000 times per day, more than 30 million times per year, and about 2.5 billion times in a 70-year lifetime.
D. The human circulatory system is responsible for sending blood throughout the body, which provides it with oxygen and nutrients. The heart, the arteries, and the veins are just three of the parts that make up this amazing system.

Determine the meaning of the word *propel* using the context clues in the sentence. wind power is the ability to capture the wind in a way to *propel* the blades of wind turbines. a) to move slowly b) to urge onward c) to stop from moving d) to drive, or cause to move, forward

Drag the tiles to the correct boxes to complete the pairs. match each paragraph to its corresponding purpose. tiles: instructs describes persuades narrates pairs before you purchase a used car from a dealer or an individual, there are important steps you must take. first, examine the car using an inspection checklist, which you can download and print from many websites. then test-drive the car under a variety of road conditions, making sure that it handles well in many situations. finally, ask for the car’s maintenance report and make sure you understand any repairs made on the car. arrowboth "good morning, sal! " uncle freddie said. " for coming in so early today." uncle freddie danced as he spoke. sal yawned. he did not know how his uncle woke up so cheerfully before dawn every day. uncle freddie placed a tray of cookies in front of sal. "i need you to decorate these," he said. he handed sal several tubes of icing. arrowboth the hole created by the meteorite's impact, known as the barringer meteorite crater, can still be seen today. it is one mile wide and over 550 feet deep—20 football games could be played at the same time on its floor, and more than two million people could watch from its sloping sides. arrowboth you know the feeling: it’s minutes until the school bus comes, but you just rolled out of bed, threw on some clothes, barely brushed your teeth, and now you’re racing out the door to catch the bus. you skip breakfast again. that’s three days this week alone! it’s no wonder, then, that by second period you start to feel awful, with your stomach grumbling and your eyelids drooping. my fellow classmates, listen up! you may be surprised by how a few simple changes in your life can have a huge effect on how you feel morning, noon, and night! arrowboth

What can a writer describe about two characters to develop their personalities? their communication the setting the exposition a transition