How can details shape a central idea

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

What impact does the use of dashes have on the rhythmic structure of this poem? the dashes create imperfect rhyme that confuses the reader. the dashes create a slow rhythm that is pleasant for the reader. the dashes create a quick rhythm that confuses the reader the dashes create a heightened rhythm that excites the reader

According to the police officer, the car accident could not have been avoided.